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[DonutRush]

It could be case of corrupted OpenGL drivers. I would suggest uninstalling the drivers and then reinstalling the latest one fresh. I know this have worked in the past for some.

I just tried this and it's so far a lot better. There's still drops here and there but it might even out as I play, I didn't have time to play too much. I'll report back if I'm still having significant issues but it looks like it's downloading another patch from Steam so this might've done it. Thank you so much for your help and responsiveness on this, I've been looking forward to SOMA for a while now