A few months ago, I use to be able to run Minecraft Java Edition completely fine, I'd get 60 FPS on highest settings, no problems at all. But now whenever I try to run Minecraft on all high, I get 10-20 FPS. Even on the lowest possible settings I still get unplayable fps (15-45 FPS). I don't know what caused this either.
On Minecraft Bedrock Edition, I get 60 FPS on highest settings. I don't know if this has to do with how this edition is optimized or made.