Simulator running slow and crashing when loading H145 heli and other birds

all of a sudden the sim is crashing and has slow frame rate. i have a 4.2 processor and a Nvidia 1080t g card as of 3/20/2022 i ran it in safe mode and it still seems to be just not right …should i reload the whole game??? repair mode is not working

All aircraft or just 3rd party?

Start with removing all mods and see how it is running.
Double check your settings haven’t changed.

ran in safe mode still slow al helis are crashing program at start when it says ready to fly. frame rate is slow community folder on 8 terabyte drive external