Every time I run a love game no matter how simple on both my 2017 imac and 2019 macbook pro, the cpu% usage skyrockets to 100 or more. If I run simply the love app without running a game the cpu usage is normal at around 5-7%. I have not noticed any major performance hit while the game is running (the game is a simple hello world, I'll link the code below). Here is the code:
How long ago did you download love for macOS? There was a bug in the original release of 11.3 for macOS which caused high CPU usage and was fixed a few months ago: https://love2d.org/forums/viewtopic.php ... 30#p231275
If you're using the most up to date build with the fix, the 'version' part of love.app's info should say 11.3b.