There is a mod called GarbageFixSystem
which works quite well, but I play on a Comminuty server on PBS with 128 player stable
https://reforger.armaplatform.com/workshop/5F13232DB28397D1-GarbageSystemFix

Another big problem are the players who always call new cars or trucks to e.g. drive to the next flag instead of gathering and driving together to a point... they organize themselves... die and repeat that... so we had at Provins already 50 cars from each side ! - Server FPS was for a long time at 2 fps 100 players !