Illustrator 21.1 slows down
After using Illustrator 21.1 for a period of time - usually over 20 minutes - the software becomes increasingly slow, laggy, unresponsive. Quitting and restarting Illustrator fixes this, but it then happens again. And again.
I have tried using fresh preferences: it makes no difference.
PC system is Intel i5-7600K @ 3.80GHz, 16GB RAM, nVidia GTX 1050Ti, up-to-date drivers, up-to-date Windows 10.