Oh, I experienced the same thing after my upgrade! What really helped me was checking for any pending updates and making sure all drivers were up-to-date, especially graphics and chipset drivers. Also, try tweaking your startup programs to lighten the load during boot-up. You can do this in the Task Manager under the 'Startup' tab. Disabling unnecessary background apps can also free up some resources. Give these a shot and see if it makes a difference!
