diff --git a/bus.go b/bus.go
index d1a4fa3..ccc1201 100644
--- a/bus.go
+++ b/bus.go
@@ -2,7 +2,9 @@ package lucifer3
 
 import (
 	"fmt"
+	"strings"
 	"sync"
+	"sync/atomic"
 )
 
 type ServiceKey struct{}
@@ -28,6 +30,7 @@ type EventBus struct {
 	listeners      []*serviceListener
 	privilegedList []ActiveService
 	signal         chan struct{}
+	setStates      int32
 }
 
 // JoinCallback joins the event bus for a moment.
@@ -62,7 +65,20 @@ func (b *EventBus) JoinPrivileged(service ActiveService) {
 }
 
 func (b *EventBus) RunCommand(command Command) {
-	fmt.Println("[COMMAND]", command.CommandDescription())
+	if cd := command.CommandDescription(); !strings.HasPrefix(cd, "SetState") {
+		if setStates := atomic.LoadInt32(&b.setStates); setStates > 0 {
+			fmt.Println("[INFO]", setStates, "SetState commands hidden.")
+			atomic.AddInt32(&b.setStates, -setStates)
+		}
+
+		fmt.Println("[COMMAND]", cd)
+	} else {
+		if atomic.AddInt32(&b.setStates, 1) >= 1000 {
+			fmt.Println("[INFO] 100 SetState commands hidden.")
+			atomic.AddInt32(&b.setStates, -1000)
+		}
+	}
+
 	b.send(serviceMessage{command: command})
 }
 
diff --git a/cmd/bustest/main.go b/cmd/bustest/main.go
index 400e8f8..ebd7ca8 100644
--- a/cmd/bustest/main.go
+++ b/cmd/bustest/main.go
@@ -27,24 +27,37 @@ func main() {
 		switch event.(type) {
 		case events.DevicesReady:
 			bus.RunCommand(commands.AddAlias{Match: "nanoleaf:10.80.1.14:2d0c", Alias: "lucifer:name:Hex 5"})
-			bus.RunCommand(commands.AddAlias{Match: "nanoleaf:10.80.1.14:542f", Alias: "lucifer:name:Hex 4"})
-			bus.RunCommand(commands.AddAlias{Match: "nanoleaf:10.80.1.14:e760", Alias: "lucifer:name:Hex 3"})
-			bus.RunCommand(commands.AddAlias{Match: "nanoleaf:10.80.1.14:207a", Alias: "lucifer:name:Hex 2"})
-			bus.RunCommand(commands.AddAlias{Match: "nanoleaf:10.80.1.14:df9a", Alias: "lucifer:name:Hex 1"})
-			bus.RunCommand(commands.AddAlias{Match: "nanoleaf:10.80.1.14:cdd5", Alias: "lucifer:name:Hex 6"})
-			bus.RunCommand(commands.AddAlias{Match: "nanoleaf:10.80.1.14:4597", Alias: "lucifer:name:Hex 7"})
-			bus.RunCommand(commands.AddAlias{Match: "nanoleaf:10.80.1.14:82cb", Alias: "lucifer:name:Hex 8"})
-			bus.RunCommand(commands.AddAlias{Match: "nanoleaf:10.80.1.14:09fd", Alias: "lucifer:name:Hex 9"})
+			bus.RunCommand(commands.AddAlias{Match: "nanoleaf:10.80.1.14:542f", Alias: "lucifer:name:Hex 6"})
+			bus.RunCommand(commands.AddAlias{Match: "nanoleaf:10.80.1.14:e760", Alias: "lucifer:name:Hex 7"})
+			bus.RunCommand(commands.AddAlias{Match: "nanoleaf:10.80.1.14:207a", Alias: "lucifer:name:Hex 8"})
+			bus.RunCommand(commands.AddAlias{Match: "nanoleaf:10.80.1.14:df9a", Alias: "lucifer:name:Hex 9"})
+			bus.RunCommand(commands.AddAlias{Match: "nanoleaf:10.80.1.14:cdd5", Alias: "lucifer:name:Hex 4"})
+			bus.RunCommand(commands.AddAlias{Match: "nanoleaf:10.80.1.14:4597", Alias: "lucifer:name:Hex 3"})
+			bus.RunCommand(commands.AddAlias{Match: "nanoleaf:10.80.1.14:82cb", Alias: "lucifer:name:Hex 2"})
+			bus.RunCommand(commands.AddAlias{Match: "nanoleaf:10.80.1.14:09fd", Alias: "lucifer:name:Hex 1"})
 			bus.RunCommand(commands.Assign{
 				Match: "nanoleaf:10.80.1.14:*",
-				Effect: effects.Gradient{
+				Effect: effects.Pattern{
 					States: []device.State{
 						{Power: p(true), Intensity: p(0.3), Color: p(color.MustParse("xy:0.22,0.18"))},
+						{Power: p(true), Intensity: p(0.4), Color: p(color.MustParse("xy:0.22,0.18"))},
+						{Power: p(true), Intensity: p(0.5), Color: p(color.MustParse("xy:0.22,0.18"))},
+					},
+					AnimationMS: 200,
+				},
+			})
+
+			time.Sleep(time.Second * 3)
+			bus.RunCommand(commands.AddAlias{Match: "nanoleaf:10.80.1.14:*", Alias: "lucifer:tag:Magic Lamps"})
+			bus.RunCommand(commands.Assign{
+				Match: "lucifer:tag:Magic Lamps",
+				Effect: effects.Gradient{
+					States: []device.State{
 						{Power: p(true), Intensity: p(0.5), Color: p(color.MustParse("xy:0.22,0.18"))},
+						{Power: p(true), Intensity: p(0.8), Color: p(color.MustParse("xy:0.22,0.18"))},
 					},
 					Interpolate: true,
-					AnimationMS: 1000,
-					Reverse:     false,
+					AnimationMS: 500,
 				},
 			})
 
@@ -56,7 +69,7 @@ func main() {
 
 	bus.RunCommand(commands.ConnectDevice{
 		ID:     "nanoleaf:10.80.1.14",
-		APIKey: "",
+		APIKey: "QRj5xcQxAQMQsjK4gvaprdhOwr1sCIcj",
 	})
 
 	time.Sleep(time.Hour)
diff --git a/commands/state.go b/commands/state.go
index 487499c..bc5e0f8 100644
--- a/commands/state.go
+++ b/commands/state.go
@@ -22,3 +22,9 @@ func (c SetState) Matches(driver string) (sub string, ok bool) {
 func (c SetState) CommandDescription() string {
 	return fmt.Sprintf("SetState(%s, %s)", c.ID, c.State)
 }
+
+type SetStateBatch map[string]device.State
+
+func (c SetStateBatch) CommandDescription() string {
+	return fmt.Sprintf("SetStateBatch(%d devices)", len(c))
+}
diff --git a/device/state.go b/device/state.go
index 5269b2b..4f6b029 100644
--- a/device/state.go
+++ b/device/state.go
@@ -47,7 +47,7 @@ func (s State) Interpolate(s2 State, f float64) State {
 	}
 
 	if s.Intensity != nil && s2.Intensity != nil {
-		newState.Intensity = gentools.Ptr((*s.Intensity * f) + (*s2.Intensity * (1.0 - f)))
+		newState.Intensity = gentools.Ptr((*s2.Intensity * f) + (*s.Intensity * (1.0 - f)))
 	} else if s.Intensity != nil {
 		newState.Intensity = gentools.ShallowCopy(s.Intensity)
 	} else if s2.Intensity != nil {
@@ -55,7 +55,7 @@ func (s State) Interpolate(s2 State, f float64) State {
 	}
 
 	if s.Temperature != nil && s2.Temperature != nil {
-		newState.Temperature = gentools.Ptr((*s.Temperature * f) + (*s2.Temperature * (1.0 - f)))
+		newState.Temperature = gentools.Ptr((*s2.Temperature * f) + (*s.Temperature * (1.0 - f)))
 	} else if s.Temperature != nil {
 		newState.Temperature = gentools.ShallowCopy(s.Temperature)
 	} else if s2.Temperature != nil {
diff --git a/effects/gradient.go b/effects/gradient.go
index 6d7d930..40c8a50 100644
--- a/effects/gradient.go
+++ b/effects/gradient.go
@@ -3,7 +3,6 @@ package effects
 import (
 	"fmt"
 	"git.aiterp.net/lucifer3/server/device"
-	"math"
 	"time"
 )
 
@@ -14,41 +13,17 @@ type Gradient struct {
 	Interpolate bool           `json:"interpolate,omitempty"`
 }
 
-func (e Gradient) State(index, length, round, _ int) device.State {
+func (e Gradient) State(index, length, round int) device.State {
 	if len(e.States) == 0 {
 		return device.State{}
 	}
 
 	if e.Reverse {
-		index = length - (index + 1)
+		round = -round
 	}
+	walkedIndex := ((length + index) - round) % length
 
-	walkedIndex := (index + round) % length
-	indexFactor := math.Min(float64(walkedIndex)/float64(length-1), 1)
-	stateIncrement := 1.0 / float64(len(e.States)-1)
-
-	for i := range e.States {
-		a := float64(i) * stateIncrement
-		if indexFactor >= a {
-			si := e.States[i]
-			sj := e.States[(i+1)%len(e.States)]
-			f := (indexFactor - a) / stateIncrement
-
-			if f < 0 || f > 1 {
-				panic(f)
-			}
-
-			if e.Interpolate {
-				return si.Interpolate(sj, f)
-			} else if f < 0.5 {
-				return si
-			} else {
-				return sj
-			}
-		}
-	}
-
-	return e.States[len(e.States)-1]
+	return gradientState(e.States, e.Interpolate, walkedIndex, length)
 }
 
 func (e Gradient) Frequency() time.Duration {
diff --git a/effects/manual.go b/effects/manual.go
index c57a97e..45e09a8 100644
--- a/effects/manual.go
+++ b/effects/manual.go
@@ -15,14 +15,14 @@ type Manual struct {
 }
 
 func (e Manual) EffectDescription() string {
-	return fmt.Sprintf("Manual%s", e.State(0, 0, 0, 0).String())
+	return fmt.Sprintf("Manual%s", e.State(0, 0, 0).String())
 }
 
 func (e Manual) Frequency() time.Duration {
 	return 0
 }
 
-func (e Manual) State(int, int, int, int) device.State {
+func (e Manual) State(int, int, int) device.State {
 	return device.State{
 		Power:       e.Power,
 		Temperature: e.Temperature,
diff --git a/effects/pattern.go b/effects/pattern.go
index 4bf25ca..0c3f6c9 100644
--- a/effects/pattern.go
+++ b/effects/pattern.go
@@ -11,7 +11,7 @@ type Pattern struct {
 	AnimationMS int64          `json:"animationMs,omitempty"`
 }
 
-func (e Pattern) State(index, _, round, _ int) device.State {
+func (e Pattern) State(index, _, round int) device.State {
 	if len(e.States) == 0 {
 		return device.State{}
 	}
diff --git a/effects/random.go b/effects/random.go
index c187881..d5e88e6 100644
--- a/effects/random.go
+++ b/effects/random.go
@@ -13,36 +13,12 @@ type Random struct {
 	AnimationMS int64          `json:"animationMs,omitempty"`
 }
 
-func (e Random) State(_, _, _, _ int) device.State {
+func (e Random) State(_, _, _ int) device.State {
 	if len(e.States) == 0 {
 		return device.State{}
 	}
 
-	indexFactor := rand.Float64()
-	stateIncrement := 1.0 / float64(len(e.States)-1)
-
-	for i := range e.States {
-		a := float64(i) * stateIncrement
-		if indexFactor >= a {
-			si := e.States[i]
-			sj := e.States[(i+1)%len(e.States)]
-			f := (indexFactor - a) / stateIncrement
-
-			if f < 0 || f > 1 {
-				panic(f)
-			}
-
-			if e.Interpolate {
-				return si.Interpolate(sj, f)
-			} else if f < 0.5 {
-				return si
-			} else {
-				return sj
-			}
-		}
-	}
-
-	return e.States[len(e.States)-1]
+	return gradientStateFactor(e.States, e.Interpolate, rand.Float64())
 }
 
 func (e Random) Frequency() time.Duration {
diff --git a/effects/utils.go b/effects/utils.go
index 1bf2a52..580c4ce 100644
--- a/effects/utils.go
+++ b/effects/utils.go
@@ -1,7 +1,9 @@
 package effects
 
 import (
+	"fmt"
 	"git.aiterp.net/lucifer3/server/device"
+	"math"
 	"strings"
 )
 
@@ -21,3 +23,41 @@ func statesDescription(states []device.State) string {
 
 	return sb.String()
 }
+
+func gradientState(states []device.State, interpolate bool, index, length int) device.State {
+	indexFactor := math.Min(float64(index)/float64(length-1), 1)
+
+	return gradientStateFactor(states, interpolate, indexFactor)
+}
+
+func gradientStateFactor(states []device.State, interpolate bool, factor float64) device.State {
+	var stateIncrement float64
+	if interpolate {
+		stateIncrement = 1.0 / float64(len(states)-1)
+	} else {
+		stateIncrement = 1.0 / float64(len(states))
+	}
+
+	for i := range states {
+		a := float64(i) * stateIncrement
+		b := float64(i+1) * stateIncrement
+
+		if factor >= a && factor < b {
+			si := states[i]
+			if !interpolate || i+1 == len(states) {
+				return si
+			}
+			sj := states[i+1]
+
+			f := (factor - a) / stateIncrement
+
+			if f < 0 || f > 1 {
+				panic(fmt.Sprintf("assert(0 <= f <= 1) f = %.2f (if = %.2f, a = %.2f, si = %.2f)", f, factor, a, stateIncrement))
+			}
+
+			return si.Interpolate(sj, f)
+		}
+	}
+
+	return states[len(states)-1]
+}
diff --git a/interface.go b/interface.go
index 6745b82..152aac8 100644
--- a/interface.go
+++ b/interface.go
@@ -10,8 +10,7 @@ type Effect interface {
 	// index: The position of this ID;
 	// len: The total length of the effect's IDs;
 	// round: Increases by one for each run of the effect if Frequency > 0;
-	// random: A random positive int in the full 31-bit range.
-	State(index, len, round, random int) device.State
+	State(index, len, round int) device.State
 	Frequency() time.Duration
 	EffectDescription() string
 }
diff --git a/services/effectenforcer.go b/services/effectenforcer.go
index 4cf1903..69a9ac6 100644
--- a/services/effectenforcer.go
+++ b/services/effectenforcer.go
@@ -4,7 +4,6 @@ import (
 	lucifer3 "git.aiterp.net/lucifer3/server"
 	"git.aiterp.net/lucifer3/server/commands"
 	"git.aiterp.net/lucifer3/server/device"
-	"math/rand"
 	"sync"
 	"sync/atomic"
 	"time"
@@ -58,7 +57,7 @@ func (s *effectEnforcer) HandleCommand(bus *lucifer3.EventBus, command lucifer3.
 		}
 		s.list = append(s.list, newRun)
 
-		// Remove the ids from any old run.
+		// Switch over the indices.
 		for _, id := range allowedIDs {
 			if oldRun := s.index[id]; oldRun != nil {
 				oldRun.remove(id)
@@ -75,11 +74,12 @@ func (s *effectEnforcer) HandleCommand(bus *lucifer3.EventBus, command lucifer3.
 
 func (s *effectEnforcer) runLoop(bus *lucifer3.EventBus) {
 	deleteList := make([]int, 0, 8)
-	commandQueue := make([]commands.SetState, 0, 32)
+	batch := make(commands.SetStateBatch, 64)
 
 	for now := range time.NewTicker(time.Millisecond * 100).C {
 		s.mu.Lock()
 		for i, run := range s.list {
+
 			if run.dead {
 				deleteList = append(deleteList, i-len(deleteList))
 				continue
@@ -88,17 +88,13 @@ func (s *effectEnforcer) runLoop(bus *lucifer3.EventBus) {
 				continue
 			}
 
-			r := rand.Int()
 			for j, id := range run.ids {
 				if id == "" {
 					continue
 				}
 
-				state := run.effect.State(j, len(run.ids), run.round, r)
-				commandQueue = append(commandQueue, commands.SetState{
-					ID:    id,
-					State: state,
-				})
+				state := run.effect.State(j, len(run.ids), run.round)
+				batch[id] = state
 			}
 
 			if freq := run.effect.Frequency(); freq > 0 {
@@ -123,12 +119,9 @@ func (s *effectEnforcer) runLoop(bus *lucifer3.EventBus) {
 		}
 		s.mu.Unlock()
 
-		if len(commandQueue) > 0 {
-			for _, command := range commandQueue {
-				bus.RunCommand(command)
-			}
-
-			commandQueue = commandQueue[:0]
+		if len(batch) > 0 {
+			bus.RunCommand(batch)
+			batch = make(commands.SetStateBatch, 64)
 		}
 	}
 }
diff --git a/services/nanoleaf/client.go b/services/nanoleaf/client.go
index 3b843c7..02fa467 100644
--- a/services/nanoleaf/client.go
+++ b/services/nanoleaf/client.go
@@ -8,6 +8,7 @@ import (
 	"encoding/json"
 	"fmt"
 	lucifer3 "git.aiterp.net/lucifer3/server"
+	"git.aiterp.net/lucifer3/server/commands"
 	"git.aiterp.net/lucifer3/server/device"
 	"git.aiterp.net/lucifer3/server/events"
 	"git.aiterp.net/lucifer3/server/internal/color"
@@ -168,45 +169,28 @@ func (b *bridge) URL(resource ...string) string {
 }
 
 func (b *bridge) Update(id string, change device.State) {
-	b.mu.Lock()
-	defer b.mu.Unlock()
-
 	transitionTime := time.Now().Add(time.Millisecond * 255)
 
+	b.mu.Lock()
 	for _, panel := range b.panels {
 		if panel.FullID == id {
-			if change.Intensity != nil {
-				panel.Intensity = *change.Intensity
-			}
-
-			if change.Color != nil {
-				rgbColor, ok := change.Color.ToRGB()
-				if !ok {
-					newColor := [4]byte{255, 255, 255, 255}
-					if newColor != panel.ColorRGBA {
-						panel.update(newColor, transitionTime)
-					}
-
-					continue
-				}
-
-				rgb := rgbColor.RGB.AtIntensity(panel.Intensity)
-				red := byte(rgb.Red * 255.0001)
-				green := byte(rgb.Green * 255.0001)
-				blue := byte(rgb.Blue * 255.0001)
-				newColor := [4]byte{red, green, blue, 255}
-				if newColor != panel.ColorRGBA {
-					panel.update(newColor, time.Now().Add(time.Millisecond*220))
-				}
-			}
+			panel.apply(change, transitionTime)
+			break
+		}
+	}
+	b.mu.Unlock()
+}
 
-			if change.Power != nil {
-				panel.On = *change.Power
-			}
+func (b *bridge) UpdateBatch(batch commands.SetStateBatch) {
+	transitionTime := time.Now().Add(time.Millisecond * 255)
 
-			break
+	b.mu.Lock()
+	for _, panel := range b.panels {
+		if change, ok := batch[panel.FullID]; ok {
+			panel.apply(change, transitionTime)
 		}
 	}
+	b.mu.Unlock()
 }
 
 func (b *bridge) Run(ctx context.Context, bus *lucifer3.EventBus) error {
diff --git a/services/nanoleaf/data.go b/services/nanoleaf/data.go
index 3c04e9e..f903065 100644
--- a/services/nanoleaf/data.go
+++ b/services/nanoleaf/data.go
@@ -2,6 +2,7 @@ package nanoleaf
 
 import (
 	"encoding/binary"
+	"git.aiterp.net/lucifer3/server/device"
 	"time"
 )
 
@@ -208,6 +209,42 @@ func (p *panel) update(colorRGBA [4]byte, transitionAt time.Time) {
 	p.TransitionAt = transitionAt
 }
 
+func (p *panel) apply(change device.State, transitionTime time.Time) {
+	if change.Power != nil {
+		p.On = *change.Power
+	}
+
+	if change.Intensity != nil {
+		p.Intensity = *change.Intensity
+	}
+
+	if change.Color != nil {
+		if !p.On {
+			newColor := [4]byte{0, 0, 0, 0}
+			if newColor != p.ColorRGBA {
+				p.update(newColor, transitionTime)
+			}
+		}
+
+		rgbColor, ok := change.Color.ToRGB()
+		if !ok {
+			newColor := [4]byte{255, 255, 255, 255}
+			if newColor != p.ColorRGBA {
+				p.update(newColor, transitionTime)
+			}
+		}
+
+		rgb := rgbColor.RGB.AtIntensity(p.Intensity)
+		red := byte(rgb.Red * 255.0001)
+		green := byte(rgb.Green * 255.0001)
+		blue := byte(rgb.Blue * 255.0001)
+		newColor := [4]byte{red, green, blue, 255}
+		if newColor != p.ColorRGBA {
+			p.update(newColor, transitionTime)
+		}
+	}
+}
+
 type panelUpdate []byte
 
 func (u *panelUpdate) Add(message [8]byte) {
diff --git a/services/nanoleaf/service.go b/services/nanoleaf/service.go
index 12cad71..128ab17 100644
--- a/services/nanoleaf/service.go
+++ b/services/nanoleaf/service.go
@@ -35,6 +35,11 @@ func (s *service) HandleCommand(bus *lucifer3.EventBus, command lucifer3.Command
 			s.bridges[sub].Update(command.ID, command.State)
 		}
 
+	case commands.SetStateBatch:
+		for _, b := range s.bridges {
+			b.UpdateBatch(command)
+		}
+
 	case commands.SearchDevices:
 		if sub, ok := command.Matches("nanoleaf"); ok {
 			if s.bridges[sub] != nil {