Massive FPS drops and stutters over LA

I flew the CRJ Into LAX last night on vatsim. Some stutter when flying east from the shoreline toward downtown, but not horrific, also not great. Made the turn south to join the final 25L and the slide show began. Eventually turned west to line up on final 10-15 NM from the airport and for 4-5 minutes got 2fps and went almost nowhere. By FAR the worst stuttering freezing I have ever encountered in this program. I used to fly this approach all the time before last update with no issues. It made me very angry to say the least… And I thought Florida was bad. LA is 10x worse