RTGI and Far Cry 5 foliage ?

Anyone here willing to help with RTGI in Far Cry 5?
Got it to work generally but get grainy visuals in the grass and trees. I assume it is related to AA. Running reshade 4.7 and tried various AA settings (in game and shaders). Thanks in advance.

I cann't get it to work at all?? I use Reshade 4.80 and RTGI _Beta_0.17.0.2