Stable Diffusion Forge suddenly unusable after a few months. Constant errors on RTX 3080

Total noob here looking for some guidance. Specs: RTX 3080, 16GB dual channel DDR4. Late last year I was using Stable Diffusion (WEBUI Forge on Stability Matrix) with basically no issues, generating images, upscaling, everything worked smoothly. I took about a 4-month break, came back, and now it’s a mess. I’m getting constant errors on pretty much everything I try: connection errored out messages, timing out, VRAM/RAM issues and a bunch of other errors I don’t fully understand.