Another thing worth trying is a very simple one, change the name of your community folder to community1 then run MSFS it will then create an empty community folder as default and not use the old one, if it works then it could mean a faulty mod or addon some of the freeware ones are never updated. you can then just add the addons one at a time to the new community folder and try and find the faulty one, Or just delete the new one and change the old one back to community.
When ASOBO release updates this is something you should always do and is recommended by them as it allows the Sim to update without loading all the community stuff as well.