After the update to android 11 I noticed that the root is really slow and laggy. If I dont have any cards on it I cant notice a difference to before but if I add cards it gets worse at about 4 to 5 cards its prettu much unusable. I have the exynos galaxy s20.
Did you try to clear the cache? Did you ran galaxy app booster after the update?
Also -unrelated- does the new update fixes the bad implementation of navigation gestures in third party launchers, or it is the same as one ui 2.5?