When Rivaturner is activated, Gog galaxy does not show notifications, nor does it allow overplaying or other actions.

This was already brought to the attention of the gog boys a while ago and it is still a problem, they have not solved it.

upp

You expect GOG to fix something? Their Overlay causes massive crashes with Cyberpunk, yet the Steam overlay works just fine. The forums have been broken for over a decade. When they can't fix an issue they just ignore it or get rid of the offending piece of code (GOGMixes, anyone?). GOG has always been a rather second class kind of place, and maybe they don't realize that's part of the reason they have issues getting publishers to release titles here. People don't want to spend time on janky websites, and GOG is the quintessential definition of janky. Well, that and a Bethesda release.

I wish this could be fixed too, since it forces me to close MSI Afterburner every time I want to play a Gog game with achievements

It's a shame, it's the only non-drm store.