Kucoin can be a good option for you as it has a limit of 2 BTC I think before you need a kyc so if your volume is relatively low go for it.
As far as I know its not 2 BTC but 1 BTC and its withdrawal limit not volume limit. So no matter what your volume is ... you can go for kucoin as long as you accept the fact that you will need few days to withdraw all your money (as long as you trade using millions)
@OP I would avoid dexes like DYDX due to low latency.