Certain shapes make illustrator change from GPU to CPU. Can't change back until a fresh reinstall.
I created this glass effect on my laptop and exported it to drive to download onto my PC. It opens normally with GPU preview but it switches to CPU if I zoom into my work. After some experimenting I found out it's only because of my shapes that create the glass effect. It affects both my laptop and PC. Laptop uses 1660 Max Q, not intergrated graphics.
It also affects other files (not consistent), that I open at the same time. Other files that are affected can't be changed back to GPU preview despite reopening the files individually. PC restart doesn't change it back to GPU preview. Only deleting the shapes AND a fresh reinstall does. (Only reinstalled the latest version to fix it)
I'm currently using version 27.3.1. I've only installed version 27.2 without deleting the glass shape to troubleshoot and it has the same problem.
Laptop specs: ROG zephyrus g14 2020
16 GB ram
1660 Ti with Max-Q design (driver: 18.104.22.16829)
16 GB ram
RX5700 XT (23.3.2) (affects the previous version too)
1TB m.2 + 2TB HDD
wacom cintiq 16 (1080x1920 version)
I can confirm that.
As soon as I get zoomed in at 300%, the rendering mode switches to CPU.
However, I don’t need to reinstall anything to bring it back, closing and reopening file is enough in my case. I use AMD Ryzen 5 3600, 15.9GB RAM, Nvidia GeForce GTX 960, Windows 10
Recently some changes were made to solve the problem with GPU switching off, and there are reports it get better in Beta 22.214.171.124 which you can install from the Creative Cloud Desktop app’s Beta section. Can you check that please? It does fix it for me!