Hi, I am working with SW Pro 2020. Until a few weeks ago, it was running OK. Now, it seems to want to re-highlight any part I pass my mouse over. (Generates yellow lines on edges). It also does the same thing when I manipulate a part. Each manipulation requires it to re-highlight again. There are two examples below. I am normally using customer provided .stp files, so I'm not sure if that is an issue or not. For simple parts like the bushing, it is OK, for complicated parts it gets seriously irritating.

I am guessing there's an option that would turn off this behaviour, but I am not sure where it would be. So if anyone has any ideas, please let me know.

(Running Win 11, I don't get any SW messages about the system being too slow, or not enough memory etc.)