What does it mean to pick these plugins when running the mupen core with GL rendering?
Nothing, AFAIK. ParaLLEl RDP requires Vulkan to even function, and the ParaLLEl RSP plugin only functions in Linux, so if you don’t meet those prerequisites and you’re getting anything other than a black screen and/or crash, those plugins must not actually be active.
Thanks for the response. Interesting, it does work, so there must be something causing to use another option.