Rocketmq message order problem with sendMessageThreadPoolNums

[??????]

Hi,   
    I am developing with Rocketmq 4.5.1, but its TPS performance is 
not enough with default config 
`sendMessageThreadPoolNums=1  useReentrantLockWhenPutMessage=false`. 
After setting sendMessageThreadPoolNums bigger than 1 can resolve this 
problem??but I wonder whether ` sendMessageThreadPoolNums  > 
1` will influence  message oder when i produce oderly message