Weird white flickering artifacts in scene

Hi all, there seems to be a split second of white flickering in my scene from times to times(random timing). Currently is using raytracing with HDRI lighting and direction light only. Does anyone knows the fix to this?

Ok so apparently it’s ray tracing gi giving these artifacts, just turning it from final gather to brute force will solve this issue…

funny thing, now I’m Brute forcing it and seeing these artifacts and searching internet. Final gather is perfect but my shadows are PITCH BLACK like a blackhole.