@ReNNie said in Why do Some DLC Packs Work and others don't:

There's no such thing as a dlcpack limit.

I'm pretty sure there is a limit, this mod by Unknown raises the limit by a considerable margin (sets it to 5208 by default).

https://www.gta5-mods.com/tools/packfile-limit-adjuster

@Punisher666 Download this mod and give it a try. If your issue is being caused by too many rpf's this should fix it.