I dont know how this happened.
When i creating new projects in Illustrator it laggs when i zoom in and moving object.
But i see in my earlier project files that i'm using GPU not CPU like it seems in my new one for some reason.
And i have checked the settings and i have GPU On, because up in the left corner is my project square that says " Project @50% RGB/GPU preview"
But instead it says on my new projects
"Project @50%RGB/ Preview Pixels"
Hi this is due to update to version 2021 ?
So you are in Pixel preview?
Yes it was that, thanks!!!
In the new section i saw i had in Pixels but changed it back to standard and now it works great again.