You can try to do a complete reinstall, but I would not expect it would fix it. Complete reinstalls usually work fine if there’s some type a corruption issue and you can’t physically open the sim.
Just for the record, I do encounter this issue in specific areas as well. For example, outside Denver my system will start those short stutters as the mainthread starts getting hammered for unknown reasons. They’re small and don’t bother me much, but I suppose on lower-end systems this can become more pronounced with longer stuters.