diff --git a/src/Clock.ts b/src/Clock.ts
index aca16bc..9ef51c9 100644
--- a/src/Clock.ts
+++ b/src/Clock.ts
@@ -127,8 +127,10 @@ export class Clock {
   }
 
   set bpm(bpm: number) {
-    this._bpm = bpm;
-    this.transportNode?.setBPM(bpm);
+    if(bpm>0 && this._bpm !== bpm) {
+      this._bpm = bpm;
+      this.transportNode?.setBPM(bpm);
+    }
   }
 
   get ppqn(): number {
@@ -136,8 +138,10 @@ export class Clock {
   }
 
   set ppqn(ppqn: number) {
-    this._ppqn = ppqn;
-    this.transportNode?.setPPQN(ppqn);
+    if(ppqn>0 && this._ppqn !== ppqn) {
+      this._ppqn = ppqn;
+      this.transportNode?.setPPQN(ppqn);
+    }
   }
 
   public convertPulseToSecond(n: number): number {
diff --git a/src/TransportNode.js b/src/TransportNode.js
index 589fe29..456cefd 100644
--- a/src/TransportNode.js
+++ b/src/TransportNode.js
@@ -8,19 +8,16 @@ export class TransportNode extends AudioWorkletNode {
         this.app = application
         this.port.addEventListener("message", this.handleMessage);
         this.port.start();
-        this.logicalTime = 0;
     }
 
     /** @type {(this: MessagePort, ev: MessageEvent<any>) => any} */
     handleMessage = (message) => {
         if (message.data && message.data.type === "bang") {
-            this.logicalTime = message.data.logicalTime;
 
             this.app.clock.tick++
-            
             const futureTimeStamp = this.app.clock.convertTicksToTimeposition(this.app.clock.tick);
-            
             this.app.clock.time_position = futureTimeStamp;
+            
             if (this.app.exampleIsPlaying) {
                 tryEvaluate(this.app, this.app.example_buffer);
             } else {
diff --git a/src/TransportProcessor.js b/src/TransportProcessor.js
index 19dc8b3..0542ca7 100644
--- a/src/TransportProcessor.js
+++ b/src/TransportProcessor.js
@@ -5,10 +5,6 @@ class TransportProcessor extends AudioWorkletProcessor {
         this.port.addEventListener("message", this.handleMessage);
         this.port.start();
         this.started = false;
-        this.totalPausedTime = 0;
-        this.lastPausedTime = 0;
-        this.startedAgainTime = 0;
-        this.wasStopped = false;
         this.bpm = 120;
         this.ppqn = 48;
         this.currentPulsePosition = 0;
@@ -21,41 +17,24 @@ class TransportProcessor extends AudioWorkletProcessor {
             this.started = true;
        } else if(message.data === "pause") {
             this.started = false;
-            if(this.lastPausedTime === 0) {
-                this.lastPausedTime = currentTime;
-            }
         } else if(message.data === "stop") {
             this.started = false;
-            this.totalPausedTime = 0;
-            this.lastPausedTime = 0;
-            this.wasStopped = true;
-            this.currentPulsePosition = 0;
         } else if(message.data.type === 'bpm') {
             this.bpm = message.data.value;
+            this.currentPulsePosition = 0;
         } else if(message.data.type === 'ppqn') {
             this.ppqn = message.data.value;
+            this.currentPulsePosition = 0;
         }
     };
 
     process(inputs, outputs, parameters) {
         if (this.started) {
-            if(this.lastPausedTime>0) {
-                const pausedTime = currentTime-this.lastPausedTime;
-                this.totalPausedTime += pausedTime;
-                this.lastPausedTime = 0;
-            }
-            if(this.wasStopped) {
-                this.startedAgainTime = currentTime;
-                this.wasStopped = false;
-            }
-
-            const logicalTime = currentTime-this.totalPausedTime-this.startedAgainTime;
-            const beatNumber = logicalTime / (60 / this.bpm);
+            const beatNumber = currentTime / (60 / this.bpm);
             const currentPulsePosition = Math.ceil(beatNumber * this.ppqn);
-
             if(currentPulsePosition > this.currentPulsePosition) {
                 this.currentPulsePosition = currentPulsePosition;
-                this.port.postMessage({ type: "bang", logicalTime });
+                this.port.postMessage({ type: "bang" });
             }
         }
         return true;