diff --git a/libs/remix-debug/src/trace/traceCache.ts b/libs/remix-debug/src/trace/traceCache.ts
index cf23de75cb..2b2e0fc45c 100644
--- a/libs/remix-debug/src/trace/traceCache.ts
+++ b/libs/remix-debug/src/trace/traceCache.ts
@@ -17,6 +17,7 @@ export class TraceCache {
   memoryChanges
   storageChanges
   sstore
+  formattedMemory
 
   constructor () {
     this.init()
@@ -36,6 +37,7 @@ export class TraceCache {
     this.addresses = []
     this.callDataChanges = []
     this.memoryChanges = []
+    this.formattedMemory = {}
     this.storageChanges = []
     this.sstore = {} // all sstore occurence in the trace
   }
@@ -53,6 +55,10 @@ export class TraceCache {
     this.memoryChanges.push(value)
   }
 
+  setFormattedMemory (stepIndex, memory) {
+    this.formattedMemory[stepIndex] = memory
+  }
+
   // outOfGas has been removed because gas left logging is apparently made differently
   // in the vm/geth/eth. TODO add the error property (with about the error in all clients)
   pushCall (step, index, address, callStack, reverted) {
diff --git a/libs/remix-debug/src/trace/traceManager.ts b/libs/remix-debug/src/trace/traceManager.ts
index 408bfd8ceb..82f0716b66 100644
--- a/libs/remix-debug/src/trace/traceManager.ts
+++ b/libs/remix-debug/src/trace/traceManager.ts
@@ -190,13 +190,21 @@ export class TraceManager {
     return this.traceCache.contractCreation[token]
   }
 
-  getMemoryAt (stepIndex) {
+  getMemoryAt (stepIndex, format = true) {
     this.checkRequestedStep(stepIndex)
     const lastChanges = util.findLowerBoundValue(stepIndex, this.traceCache.memoryChanges)
     if (lastChanges === null) {
       throw new Error('no memory found')
     }
-    return this.trace[lastChanges].memory
+    if (!format) {
+      return this.trace[lastChanges].memory
+    }
+    if (this.traceCache.formattedMemory[lastChanges]) {
+      return this.traceCache.formattedMemory[lastChanges]
+    }
+    const memory = util.formatMemory(this.trace[lastChanges].memory)
+    this.traceCache.setFormattedMemory(lastChanges, memory)
+    return memory
   }
 
   getCurrentPC (stepIndex) {
diff --git a/libs/remix-debug/test/traceManager.ts b/libs/remix-debug/test/traceManager.ts
index 3269bceb4a..8128e21ac8 100644
--- a/libs/remix-debug/test/traceManager.ts
+++ b/libs/remix-debug/test/traceManager.ts
@@ -164,7 +164,7 @@ tape('TraceManager', function (t) {
   t.test('TraceManager.getMemoryAt', function (st) {
     st.plan(3)
     try {
-      const result = traceManager.getMemoryAt(0)
+      const result = traceManager.getMemoryAt(0, false)
       console.log(result)
       st.ok(result.length === 0)
     } catch (error) {
@@ -172,7 +172,7 @@ tape('TraceManager', function (t) {
     }
 
     try {
-      const result = traceManager.getMemoryAt(34)
+      const result = traceManager.getMemoryAt(34, false)
       console.log(result)
       st.ok(result.length === 3)
       st.ok(result[2] === '0000000000000000000000000000000000000000000000000000000000000060')
diff --git a/libs/remix-lib/src/execution/txRunnerWeb3.ts b/libs/remix-lib/src/execution/txRunnerWeb3.ts
index 465960a753..4319b8be92 100644
--- a/libs/remix-lib/src/execution/txRunnerWeb3.ts
+++ b/libs/remix-lib/src/execution/txRunnerWeb3.ts
@@ -61,7 +61,7 @@ export class TxRunnerWeb3 {
           tx = await tryTillTxAvailable(resp, this.getWeb3())
           currentDateTime = new Date();
           const end = currentDateTime.getTime() / 1000
-          console.log('stopwatch', end - start)
+          console.log('tx duration', end - start)
           resolve({
             receipt,
             tx,
diff --git a/libs/remix-simulator/src/VmProxy.ts b/libs/remix-simulator/src/VmProxy.ts
index afd840147c..a7c6ae323a 100644
--- a/libs/remix-simulator/src/VmProxy.ts
+++ b/libs/remix-simulator/src/VmProxy.ts
@@ -43,7 +43,9 @@ export class VmProxy {
   txsMapBlock
   blocks
   stateCopy: StateManager
-
+  flagDoNotRecordEVMSteps: boolean
+  lastMemoryUpdate: Array<string>
+  
   constructor (vmContext: VMContext) {
     this.vmContext = vmContext
     this.stateCopy
@@ -85,6 +87,7 @@ export class VmProxy {
     this.utils = utils
     this.txsMapBlock = {}
     this.blocks = {}
+    this.lastMemoryUpdate = []
   }
 
   setVM (vm) {
@@ -109,7 +112,13 @@ export class VmProxy {
     return ret
   }
 
+  flagNextAsDoNotRecordEvmSteps () {
+    this.flagDoNotRecordEVMSteps = true
+  }
+
   async txWillProcess (data: TypedTransaction) {
+    if (this.flagDoNotRecordEVMSteps) return
+    this.lastMemoryUpdate = []
     this.stateCopy = await this.vm.stateManager.copy()
     this.incr++
     this.processingHash = bufferToHex(data.hash())
@@ -142,12 +151,16 @@ export class VmProxy {
         } catch (e) {
           console.log(e)
         }
-      })(this.processingHash, data.to, tx['to'], this)      
+      })(this.processingHash, data.to, tx['to'], this)
     }
     this.processingIndex = 0
   }
 
   async txProcessed (data: AfterTxEvent) {
+    if (this.flagDoNotRecordEVMSteps) {
+      this.flagDoNotRecordEVMSteps = false
+      return
+    }
     const lastOp = this.vmTraces[this.processingHash].structLogs[this.processingIndex - 1]
     if (lastOp) {
       lastOp.error = lastOp.op !== 'RETURN' && lastOp.op !== 'STOP' && lastOp.op !== 'DESTRUCT'
@@ -181,9 +194,15 @@ export class VmProxy {
     const to = this.txs[this.processingHash].to
     if (to) {
       try {
-        const account = Address.fromString(to)
-        const storage = await this.vm.stateManager.dumpStorage(account)
-        this.storageCache['after_' + this.processingHash][to] = storage
+        await (async (processingHash, processingAddress, self) => {
+          try {
+            const account = Address.fromString(processingAddress)
+            const storage = await self.vm.stateManager.dumpStorage(account)
+            self.storageCache['after_' + processingHash][processingAddress] = storage
+          } catch (e) {
+            console.log(e)
+          }
+        })(this.processingHash, to, this)
       } catch (e) {
         console.log(e)
       }
@@ -191,8 +210,9 @@ export class VmProxy {
 
     if (data.createdAddress) {
       const address = data.createdAddress.toString()
-      this.vmTraces[this.processingHash].return = toChecksumAddress(address)
-      this.txsReceipt[this.processingHash].contractAddress = toChecksumAddress(address)
+      const checksumedAddress = toChecksumAddress(address)
+      this.vmTraces[this.processingHash].return = checksumedAddress
+      this.txsReceipt[this.processingHash].contractAddress = checksumedAddress
     } else if (data.execResult.returnValue) {
       this.vmTraces[this.processingHash].return = '0x' + data.execResult.returnValue.toString('hex')
     } else {
@@ -205,6 +225,7 @@ export class VmProxy {
   }
 
   async pushTrace (data: InterpreterStep) {
+    if (this.flagDoNotRecordEVMSteps) return
     try {
       const depth = data.depth + 1 // geth starts the depth from 1
       if (!this.processingHash) {
@@ -220,21 +241,27 @@ export class VmProxy {
       }
       const step = {
         stack: hexListFromBNs(data.stack),
-        memory: formatMemory(data.memory),
         storage: {},
+        memory: null,
         op: data.opcode.name,
         pc: data.pc,
         gasCost: data.opcode.fee.toString(),
         gas: data.gasLeft.toString(),
         depth: depth
       }
+
+      if (previousOpcode && (previousOpcode.op === 'CALLDATACOPY' || previousOpcode.op === 'CODECOPY' || previousOpcode.op === 'EXTCODECOPY' || previousOpcode.op === 'RETURNDATACOPY' || previousOpcode.op === 'MSTORE' || previousOpcode.op === 'MSTORE8')) {
+        step.memory = data.memory
+        this.lastMemoryUpdate = step.memory
+      }
       this.vmTraces[this.processingHash].structLogs.push(step)
       // Track hardhat console.log call
       if (step.op === 'STATICCALL' && step.stack[step.stack.length - 2] === '0x000000000000000000000000000000000000000000636f6e736f6c652e6c6f67') {
         const stackLength = step.stack.length
         const payloadStart = parseInt(step.stack[stackLength - 3], 16)
-        const memory = step.memory.join('')
-        let payload = memory.substring(payloadStart * 2, memory.length)
+        const memory = formatMemory(data.memory)
+        const memoryStr = memory.join('')
+        let payload = memoryStr.substring(payloadStart * 2, memoryStr.length)
         const fnselectorStr = payload.substring(0, 8)
         const fnselectorStrInHex = '0x' + fnselectorStr
         const fnselector = parseInt(fnselectorStrInHex)
@@ -279,7 +306,7 @@ export class VmProxy {
         }
       }
       if (previousOpcode && previousOpcode.op === 'SHA3') {
-        const preimage = this.getSha3Input(previousOpcode.stack, previousOpcode.memory)
+        const preimage = this.getSha3Input(previousOpcode.stack, formatMemory(this.lastMemoryUpdate))
         const imageHash = step.stack[step.stack.length - 1].replace('0x', '')
         this.sha3Preimages[imageHash] = {
           preimage: preimage
diff --git a/libs/remix-simulator/src/methods/transactions.ts b/libs/remix-simulator/src/methods/transactions.ts
index 28cedbedf4..7dc4dd5dc7 100644
--- a/libs/remix-simulator/src/methods/transactions.ts
+++ b/libs/remix-simulator/src/methods/transactions.ts
@@ -155,6 +155,7 @@ export class Transactions {
 
     payload.params[0].gas = 10000000 * 10
 
+    this.vmContext.web3().flagNextAsDoNotRecordEvmSteps()
     processTx(this.txRunnerInstance, payload, true, (error, value: VMexecutionResult) => {
       const result: RunTxResult = value.result
       if (error) return cb(error)
diff --git a/libs/remix-simulator/src/vm-context.ts b/libs/remix-simulator/src/vm-context.ts
index a10e32b0bb..a07a4c25c0 100644
--- a/libs/remix-simulator/src/vm-context.ts
+++ b/libs/remix-simulator/src/vm-context.ts
@@ -79,21 +79,6 @@ class StateManagerCommonStorageDump extends DefaultStateManager {
         })
     })
   }
-
-  async setStateRoot (stateRoot) {
-    await this._cache.flush()
-
-    if (!stateRoot.equals(this._trie.EMPTY_TRIE_ROOT)) {
-      const hasRoot = await this._trie.checkRoot(stateRoot)
-      if (!hasRoot) {
-        throw new Error('State trie does not contain state root')
-      }
-    }
-
-    this._trie.root = stateRoot
-    this._cache.clear()
-    this._storageTries = {}
-  }
 }
 
 export type CurrentVm = {