I'm not sure what happened, but after updating to SDK 2.4.1 on Ubuntu Linux recently, the Simulator has been running realllly slowly, and at 100% CPU.
Reinstalling / running the older 2.3.1 doesn't seem to fix it, but I'm not sure what might be causing it. Has anyone else experienced this, or might be able to help?
@willco I have Plasma installed, but am running Gnome on Xorg. I tried running it under Wayland as well as using the i3 desktop manager, but seem to get the same issue.
OK, good to know. Something is causing excessive menu item validation on your system which is causing the slow down. I've added a 'fix' in SDK 2.5 for another user with the same issue already, but if possible, disable anything that might be messing with your GTK menus.