Ubuntu MATE 20.04, fresh install.
Every couple of days, Caja (apparently randomly) uses over 100% CPU usage and is painfully slow to respond to input. If I open the menu "edit - preferences - preview" and set either one of 'show text in icons' or 'show thumbnails' to "never", CPU usage returns to normal and Caja is again responsive. I set the changed option back to "local files only" and all remains good for a few days.
Has anybody else got issues with Caja using 100% CPU usage? If so, can you try changing the setting I mention and see if that also works for you?
I want to report a bug but would value someone confirming the same.