ok, since its going to be a thread to help others, some have find this trick have made them fix their low fps on raids even with high end setups
You'll need to disable FTH in windows
To disable Fault Tolerant Heap entirely on a system, set the REG_DWORD value HKEY_LOCAL_MACHINE\Software\Microsoft\FTH\Enabled to 0.
After changing this value, restart the system. FTH will no longer activate for new applications.
and
Rundll32.exe fthsvc.dll,FthSysprepSpecialize
in cmd resets list of apps tracked by FTH if some programs were acc fixed by it they might not work again tho
some ppl got this value to 0, if its the case enabled it to 1
and check if there is still some issue