I use Defender and Malwarebytes. No virus. The slowdown is the sole result of the upgrade from 10 to 11... Hopefully, the updates will take care of it...
I hope it is temporary... But since I loaded windows 11, everything seems to be much slower. Waking the computer, cropping in Polyview, starting Photoshop... It looks good but I hope the speed is going to be fixed... And I run Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz 3.60 GHz and 128 GB of Ram...