Probably a bigsur selection 'crawling ants' or similar issue. as this bug report https://gitlab.gnome.org/GNOME/gimp/-/issues/5952
Quite a few complaints about this as: https://www.gimp-forum.net/Thread-is-big...ue-rsolved
Not much you can do at the moment.
Quite a few complaints about this as: https://www.gimp-forum.net/Thread-is-big...ue-rsolved
Not much you can do at the moment.