Follow up on my last thread

My last thread: Recent (and sudden) frame drops
Sorry, I can’t post another comment as someone else has to participate first. Feel free to close this one if someone else replies to my old thread.

Back with another update. Haven’t played in 2 days and now I’m having the same issues. Played all day on Tuesday when the summer event started with no problems and now I’m getting between 50-90 FPS in game. Fluctuates wildly so the game is unplayable. When I had first uninstalled and reinstalled everything I was getting over 100 fps with sudden drops once in a while (would last literally only 2 seconds, so it wasn’t a big deal).
I tried to uninstall and reinstall everything and that no longer seems to work… Out of ideas. Any help would be appreciated.