strange flickering artifacts and shadow errors while using RTGI shaders

so i just downloaded RTGI shaders, and was trying to get them working with my games. I tried portal 2 first, but it looked really strange. The shadows were wrong, and there was a strange flickering occulsion thing that covered everything. I tried the shaders in Portal stories mel and Mad Max, and all had the exact same issue. I'll link the screen recording of portal 2 below. I asked the PGhub discord, and no one had any idea what was wrong.
drive.google.com/file/d/1DC0wZvM2o3HwerE...N0_/view?usp=sharing
Any help is greatly appreciated!
Thanks!
 

it might be that the depth buffer is not correctly put? try seeing with depth duffer if everything is working well.