Ok, it's not a real fix, but still. Don't blame me. The AI will keep messing up but the field won't spread. At least it didn't in my side. a) Short answer for those that are used to rF2 system: reduce your Speed Car speed to 60 km/h. b) Long answer if you're not into the system details are below. The only way I found to force the AI groups behind of Safety car is messing with track *.MAS files and PLR. Unfortunately you have to force the SC to run very slow (I tested with 60 km/h), but it's working for me. The AI cars are packed behind the SC and the things become more "normal" when it happens. Since rF2 has so many variables to mess with, I cannot guarantee it will work in your system too but maybe it's a worth trying. PLR file: make sure you have: "CURNT Safety Car Collidable":false, "CHAMP Safety Car Thresh":2, all instances in PLR file - this reduce the chance to have a safety car when it's really not necessary "AI Formation by Position":false, "Adjust Frozen Order":0, Track manipulation: Choose the track you're intend to race at in ...SteamLibrary\steamapps\common\rFactor 2\Installed\Locations\ and make a full directory copy. Give it some different name. Open "MAS Utility" in Launcher and locate the new folder you created. Locate the layout (layouts) *.MAS you want to race. In this case I'll do for Brands - GP only Extract the GDB file to any folder (maybe it's better to use the same you've just created to easy find) Edit the bloody file with some text editor and look for the line: "FormationSpeedKPH" In this case (Brands) this line is missing. Add it, then save and close. Back to MAS Utility, open again the layout track file you picked up. Cut the GDB file off (it will delete the file). It will take a time to perform it, just wait. Click on the "+" button and add the new GDB file that you inserted the FormationSpeedKPH line. Click on File > Save. Now it's time to create the new package: on the box button again, "create single CMP package". Fill the fields like the image. The location of the rcmp doesn't matter too much. Click in "Package" than in "Install" (don't forget that one). Check if the green box is lighten. Close the MAS Utility. Testing: In-game, select the new installed track. Be careful, the name can be the same of the regular version of the track. Make sure you picked the track version you've just installed. I gave a random version to it in MAS Utility to make the identification easier (in this case, 2.5) Start a race event picking some position in the middle of the grid. Do something stupid on track to deploy the SC (this is the easier part for me). They will keep racing normally until the next lap. Keep up with the infront AI but be careful, they will brake suddenly at next lap open. Then let the AI drive your car. Jump to the race leader car and check his panel. It should be racing at 60 km/h (or the speed you have set in GDB file). If it doesn't, something has failed during the process. Some stupid AIs will brake anyway but once the SC is really slow they end up regrouping eventually. That's it, as I said, is not a "fix", it's just a band-aid to avoid huge spreads and car groups after SC. Hope it helps someone. Sometimes, I tested overtaking the slow AI infront of me (even the system not asking me to do that) and let him pass, this helps to break the bug cycle as well.