I did that (set GI to SSR), it didn’t have much of an effect, I mean it changed the reflection’s properties a bit but it was still broken, just marginally less so (it rendered more of the SKM but it also had more artifacting, environment still didn’t reflect).
I’ll have to try setting reflection method to none though I didn’t try that way. I’m currently playing with scenecapture2d mirrors, I think I know a way to get them to very closely imitate real mirrors.