After upgrading to Windows 11, games crash and the browser runs slowly

After the system automatically updated, running software in the background while gaming causes stuttering, crashes, and even black screens. The browser also experiences delays. How can this be fixed?

So, You have a Dual-Boot System with Zorin, yes? And You updated Windows or did You upgraded from W10 to W11? And then You had this Issue. Is this Issue now in Zorin or Windows?