diff --git a/demo/scenarios/macos/main.jxa b/demo/scenarios/macos/main.jxa
index 7f89170..82b5129 100644
--- a/demo/scenarios/macos/main.jxa
+++ b/demo/scenarios/macos/main.jxa
@@ -33,6 +33,18 @@ const windows = terminal.windows()
 
 const wins = []
 
+function saveBlockchainData () {
+  console.log('Saving blockchain data')
+  curApp.doShellScript('zip -r ./demo/ganache_home_backup.zip ./demo/ganache_home_db')
+  curApp.doShellScript('zip -r ./demo/ganache_side_backup.zip ./demo/ganache_side_db')
+}
+
+function reloadBlockchainData () {
+  console.log('Reloading blockchain data')
+  curApp.doShellScript('unzip -d . ./demo/ganache_home_backup.zip')
+  curApp.doShellScript('unzip -d . ./demo/ganache_side_backup.zip')
+}
+
 function closeOldWindows () {
   for (let i in windows) {
     try {
@@ -80,7 +92,7 @@ function openNewWindows () {
 }
 
 function apiRequestBackground (url) {
-  const response = curApp.doShellScript(`curl -X GET "${url}"`)
+  const response = curApp.doShellScript(`curl -s -X GET "${url}"`)
   try {
     return JSON.parse(response)
   } catch (e) {
@@ -94,11 +106,11 @@ function exec (n, script) {
 
 function wait (n) {
   while (wins[n - 1].selectedTab().busy()) {
-    delay(0.3)
+    delay(0.2)
   }
 }
 
-function execSync(n, script) {
+function execSync (n, script) {
   exec(n, script)
   wait(n)
 }
@@ -116,7 +128,7 @@ function waitLog (n, log) {
     if (s) {
       return s
     }
-    delay(0.3)
+    delay(0.2)
   } while (true)
 }
 
@@ -126,7 +138,7 @@ function waitApi (n, url, check) {
     const checkerRes = check ? check(res) : true
     if (checkerRes)
       return checkerRes
-    delay(0.3)
+    delay(3)
   } while (true)
 }
 
@@ -157,12 +169,12 @@ function getBncTokenBalance (address) {
 }
 
 function waitBncTokenBalance (address, balance) {
-  do {
+  while (true) {
     const newBalance = getBncTokenBalance(address)
     if (Math.abs(newBalance - balance) < 0.0001)
       return newBalance
-    delay(0.3)
-  } while (true)
+    delay(3)
+  }
 }
 
 function getEthTokenBalance (address) {
@@ -171,12 +183,12 @@ function getEthTokenBalance (address) {
 }
 
 function waitEthTokenBalance (address, balance) {
-  do {
+  while (true) {
     const newBalance = getEthTokenBalance(address)
     if (Math.abs(newBalance - balance) < 0.0001)
       return newBalance
-    delay(0.3)
-  } while (true)
+    delay(3)
+  }
 }
 
 function apiRequest (n, url, suffix) {
@@ -223,9 +235,10 @@ function testEthToBnc () {
     return true
   })
 
-  userAccounts.forEach(({ privateKey }, i) => {
-    exec(4, `PRIVATE_KEY=${privateKey} ./src/test-services/ethereumSend/run.sh bridge ${5 + i}`)
+  userAccounts.forEach((account, i) => {
+    exec(4, `PRIVATE_KEY=${account.privateKey} ./src/test-services/ethereumSend/run.sh bridge ${5 + i}`)
     wait(4)
+    account.ethBalance -= 5 + i
   })
 
   const delta = (9 + userAccounts.length) * userAccounts.length / 2
@@ -250,9 +263,10 @@ function testBncToEth () {
     return true
   })
 
-  userAccounts.forEach(({ privateKey }, i) => {
-    exec(4, `PRIVATE_KEY=${privateKey} ./src/test-services/binanceSend/run.sh ${bridgeBncAddress} ${3 + i}`)
+  userAccounts.forEach((account , i) => {
+    exec(4, `PRIVATE_KEY=${account.privateKey} ./src/test-services/binanceSend/run.sh ${bridgeBncAddress} ${3 + i}`)
     wait(4)
+    account.bncBalance -= 3 + i
   })
 
   const delta = (5 + userAccounts.length) * userAccounts.length / 2
@@ -339,9 +353,18 @@ function run () {
 
   clean()
 
-  execSync(4, `./demo/start-environment.sh`)
+  if ($.getenv('RELOAD') !== 'true') {
+    execSync(4, `./demo/start-environment.sh`)
+
+    prefundEthAddresses()
+
+    saveBlockchainData()
+  } else {
+    reloadBlockchainData()
+
+    execSync(4, `./demo/start-environment.sh`)
+  }
 
-  prefundEthAddresses()
   prefundBncAddresses()
 
   initBalances()
@@ -351,8 +374,14 @@ function run () {
   exec(3, `N=3 ./demo/validator-demo.sh`)
 
   // wait until binance account willl be generated
-  let log = waitLog(1, 'Generated multisig account in binance chain')
-  bridgeBncAddress = /tbnb\w+/.exec(log)[0]
+  waitLog(1, 'Generated multisig account in binance chain')
+  waitApi(1, '/info', res => {
+    if (res.epoch === 1) {
+      bridgeBncAddress = res.foreignBridgeAddress
+      return true
+    }
+    return false
+  })
 
   // prefund binance account
   execSync(4, `./src/test-services/binanceSend/run.sh ${bridgeBncAddress} 100 0.1`)
diff --git a/demo/scenarios/macos/run.sh b/demo/scenarios/macos/run.sh
index 06f19b4..2351b7a 100755
--- a/demo/scenarios/macos/run.sh
+++ b/demo/scenarios/macos/run.sh
@@ -1,3 +1,5 @@
 #!/bin/bash
 
-osascript -l JavaScript ./demo/scenarios/macos/main.jxa
+RELOAD=${RELOAD:=false}
+
+RELOAD="$RELOAD" osascript -l JavaScript ./demo/scenarios/macos/main.jxa
diff --git a/demo/start-environment.sh b/demo/start-environment.sh
index 8c18dbe..85ac689 100755
--- a/demo/start-environment.sh
+++ b/demo/start-environment.sh
@@ -21,6 +21,7 @@ start_dev_blockchain_networks() {
   docker kill ganache_side > /dev/null 2>&1 || true
   docker network create blockchain_side > /dev/null 2>&1 || true
   docker run -d --network blockchain_side --rm --name ganache_side -v "$SIDE_GANACHE_DB:/app/db" \
+      -p "8545:8545" \
       trufflesuite/ganache-cli:latest \
       -m "shrug dwarf easily blade trigger lucky reopen cage lake scatter desk boat" -i 33 -q --db /app/db -b 3 --noVMErrorsOnRPCResponse
 
diff --git a/demo/validator1/.env.development b/demo/validator1/.env.development
index 80f4332..5d02252 100644
--- a/demo/validator1/.env.development
+++ b/demo/validator1/.env.development
@@ -3,7 +3,7 @@ HOME_BRIDGE_ADDRESS=0x44c158FE850821ae69DaF37AADF5c539e9d0025B
 HOME_TOKEN_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 HOME_START_BLOCK=1
 
-BLOCKS_RANGE_SIZE=50
+BLOCKS_RANGE_SIZE=25
 
 SIDE_RPC_URL=http://ganache_side:8545
 SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
diff --git a/demo/validator2/.env.development b/demo/validator2/.env.development
index 695048e..19ea275 100644
--- a/demo/validator2/.env.development
+++ b/demo/validator2/.env.development
@@ -3,7 +3,7 @@ HOME_BRIDGE_ADDRESS=0x44c158FE850821ae69DaF37AADF5c539e9d0025B
 HOME_TOKEN_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 HOME_START_BLOCK=1
 
-BLOCKS_RANGE_SIZE=50
+BLOCKS_RANGE_SIZE=25
 
 SIDE_RPC_URL=http://ganache_side:8545
 SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
diff --git a/demo/validator3/.env.development b/demo/validator3/.env.development
index 88e43a1..e69ef41 100644
--- a/demo/validator3/.env.development
+++ b/demo/validator3/.env.development
@@ -3,7 +3,7 @@ HOME_BRIDGE_ADDRESS=0x44c158FE850821ae69DaF37AADF5c539e9d0025B
 HOME_TOKEN_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 HOME_START_BLOCK=1
 
-BLOCKS_RANGE_SIZE=50
+BLOCKS_RANGE_SIZE=25
 
 SIDE_RPC_URL=http://ganache_side:8545
 SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc