Have you tried clearing the cache partition yet?
Have you tried a reset/restore? Do a full backup before you do that. Either through Samsung or through Samsungs Smart Switch on your computer at home.
Were you using something like Nova Settings for your desktop? If you were, then after you updated it, it might have switched back over to OneUI (Default)
If you are still having a problem, Google for a local UBREAKIFIX location and swing by there and let them do another update on it.