Same experience. Used Rider exclusively for maybe 8 years, all of them on linux, but clanker advancements in the past six months finally allowed me not to open it at all recently. I believe I even removed it from disk.

Good IDE but they ignored bugs and serious performance problems for too long. The main project I'm working on isn't even that big, maybe 1M SLoC in total, most of them C#, and Rider really struggles with it even on good hardware.

This forced some architectural changes to satisfy the machine (breaking out libraries where they weren't necessary, running code analyzers only in CI, not during development, etc).

So I don't miss the experience.

MS finally have a language server (still in preview, but it works fine) which can be attached to helix in a couple of lines, and that + good knowledge of Unix command line tools is more than enough now.