Not every card can handle the same intensity/tweak profile. So what you need to do is to test separately which tweak profile can you use on which gpu.
For that you need to use the 'gpu_conf' or set gpu's in cmd line.
Thanks for the answer Dok! so, the settings of my OverdriveNtool and even changing my Adrenaline Driver from 18.5.1 to 18.6.1 won't affect anything much to the hashrate right?
can you please tell me the recommended Base Intensity, threads and worksize of "gpu_conf" for Vega56 - CN-Haven algorithm to start tweaking with?
Currently I'm still using basic cn-haven config with "intensity" : 0
thank you !