I don't find that. I had to upgrade our corporate machine to best on market work station to run 11 properly and its still chugs. It's also noticeable slower with apps, a downwars trend from 7 to 10 and now 11.
One thing that totally freezes it for too long is office auto installs ai.exe and aimgr.DLL in some deep folder place. If I delete them the system is somewhat better, but updates put them back