[jeroenhd]

There's a project setting for running linting tools on the fly rather than when invoking actions. These will do stuff like lint and refresh stuff as you type, but it adds latency and other weird jitters if the tools take longer than expected to finish execution. This is indicated next to the checkbox that enables the setting.

I usually turn the setting on, but there are a few projects that do make the UI sluggish where u have to turn them off. I'm not entirely sure what the problem is, some code with many dependencies works absolutely fine while some code with only basic crates turns into a lagfest. My suspicion is that there's a crate somewhere deep down the dependency tree that makes use of some very intensive macros that trip up the tooling.

I've also noticed that the most recent release of Rust made working with the tooling feel a lot snappier. Not sure what changed, but it's nice to see.

One laat thing I always recommend anyone running into weird IntelliJ/Clion/IDE slowdowns: check the difference between antivirus off/on to see if that influences things. Windows Defender just can't seem to deal with a program opening many small files. What this means for you depends (you probably shouldn't disable AV on a company laptop) but it may solve the mystery why your experience doesn't match other people's.

[renewiltord]

Interesting. I just updated CLion and I got a notification that "Cargo Check on the fly analysis is turned OFF". So the setting is in Languages & Frameworks > Rust > External Linters.