All right, i’m tired as hell, as it was not easy at all to sum this up, those are most important aspects of RTGI:
7.2. SSRTGI (Screen space ray tracing global illumination)
8. Problems
There are still couple of parameters and problems need some proper writing though…
@Sojiro84 Since you use RTGI - might wanna read that - plenty of stuff to grasp 
P.S. If someone will come up with solutions to common problems or i’ve missed something important - please do hit me up here 
P.P.S. @BONK maybe moving was a mistake, since:
issues… and this is not really an issue here, more like a solution 