diff --git a/app/ante/eth.go b/app/ante/eth.go
index dfa8dc9347..5f78f414ed 100644
--- a/app/ante/eth.go
+++ b/app/ante/eth.go
@@ -311,12 +311,15 @@ func canTransfer(ctx sdk.Context, evmKeeper EVMKeeper, denom string, from common
 // EthIncrementSenderSequenceDecorator increments the sequence of the signers.
 type EthIncrementSenderSequenceDecorator struct {
 	ak evmtypes.AccountKeeper
+
+	unsafeUnOrderedTx bool
 }
 
 // NewEthIncrementSenderSequenceDecorator creates a new EthIncrementSenderSequenceDecorator.
-func NewEthIncrementSenderSequenceDecorator(ak evmtypes.AccountKeeper) EthIncrementSenderSequenceDecorator {
+func NewEthIncrementSenderSequenceDecorator(ak evmtypes.AccountKeeper, unsafeUnOrderedTx bool) EthIncrementSenderSequenceDecorator {
 	return EthIncrementSenderSequenceDecorator{
-		ak: ak,
+		ak:                ak,
+		unsafeUnOrderedTx: unsafeUnOrderedTx,
 	}
 }
 
@@ -344,14 +347,15 @@ func (issd EthIncrementSenderSequenceDecorator) AnteHandle(ctx sdk.Context, tx s
 			)
 		}
 		nonce := acc.GetSequence()
-
-		// we merged the nonce verification to nonce increment, so when tx includes multiple messages
-		// with same sender, they'll be accepted.
-		if txData.GetNonce() != nonce {
-			return ctx, errorsmod.Wrapf(
-				errortypes.ErrInvalidSequence,
-				"invalid nonce; got %d, expected %d", txData.GetNonce(), nonce,
-			)
+		if !issd.unsafeUnOrderedTx {
+			// we merged the nonce verification to nonce increment, so when tx includes multiple messages
+			// with same sender, they'll be accepted.
+			if txData.GetNonce() != nonce {
+				return ctx, errorsmod.Wrapf(
+					errortypes.ErrInvalidSequence,
+					"invalid nonce; got %d, expected %d", txData.GetNonce(), nonce,
+				)
+			}
 		}
 
 		if err := acc.SetSequence(nonce + 1); err != nil {
diff --git a/app/ante/eth_test.go b/app/ante/eth_test.go
index 134ccfd680..64026ad2b9 100644
--- a/app/ante/eth_test.go
+++ b/app/ante/eth_test.go
@@ -106,7 +106,7 @@ func (suite *AnteTestSuite) TestNewEthAccountVerificationDecorator() {
 
 func (suite *AnteTestSuite) TestEthNonceVerificationDecorator() {
 	suite.SetupTest()
-	dec := ante.NewEthIncrementSenderSequenceDecorator(suite.app.AccountKeeper)
+	dec := ante.NewEthIncrementSenderSequenceDecorator(suite.app.AccountKeeper, false)
 
 	addr := tests.GenerateAddress()
 
@@ -408,7 +408,7 @@ func (suite *AnteTestSuite) TestCanTransferDecorator() {
 }
 
 func (suite *AnteTestSuite) TestEthIncrementSenderSequenceDecorator() {
-	dec := ante.NewEthIncrementSenderSequenceDecorator(suite.app.AccountKeeper)
+	dec := ante.NewEthIncrementSenderSequenceDecorator(suite.app.AccountKeeper, false)
 	addr, privKey := tests.NewAddrKey()
 
 	contract := evmtypes.NewTxContract(suite.app.EvmKeeper.ChainID(), 0, big.NewInt(10), 1000, big.NewInt(1), nil, nil, nil, nil)
diff --git a/app/ante/handler_options.go b/app/ante/handler_options.go
index 2e6933a829..d30b7ceae7 100644
--- a/app/ante/handler_options.go
+++ b/app/ante/handler_options.go
@@ -47,6 +47,9 @@ type HandlerOptions struct {
 	DisabledAuthzMsgs      []string
 	ExtraDecorators        []sdk.AnteDecorator
 	PendingTxListener      PendingTxListener
+
+	// see #494, just for benchmark, don't turn on on production
+	UnsafeUnorderedTx bool
 }
 
 func (options HandlerOptions) validate() error {
@@ -84,7 +87,7 @@ func newEthAnteHandler(ctx sdk.Context, options HandlerOptions, extra ...sdk.Ant
 		NewEthAccountVerificationDecorator(options.AccountKeeper, options.EvmKeeper, evmDenom),
 		NewCanTransferDecorator(options.EvmKeeper, baseFee, &evmParams, ethCfg),
 		NewEthGasConsumeDecorator(options.EvmKeeper, options.MaxTxGasWanted, ethCfg, evmDenom, baseFee),
-		NewEthIncrementSenderSequenceDecorator(options.AccountKeeper), // innermost AnteDecorator.
+		NewEthIncrementSenderSequenceDecorator(options.AccountKeeper, options.UnsafeUnorderedTx), // innermost AnteDecorator.
 		NewGasWantedDecorator(options.FeeMarketKeeper, ethCfg),
 		NewEthEmitEventDecorator(options.EvmKeeper), // emit eth tx hash and index at the very last ante handler.
 	}