Valve have started offering refunds for CS:GO prime (not any of the microtransactions) if you played mostly on a Mac, or if you bought prime on a low-end Windows machine* between the CS2 beta and CS2 release https://help.steampowered.com/en/faqs/view/73EF-08A3-0935-6369
make sure to get your refunds in if you were affected!