Guide: run Minecraft at full speed on Rock 5B

I see there are several blobs in JeffyCN’s repo: x11, wayland, x11-wayland, gdm…
What’s the difference betwen them? Is it possible to use a blob driver by default, and what are the downsides?
If I’m mainly using Wayland, how should I make most apps (e.g. Chromium, but maybe also things like OpenCL, fullscreen apps like Kodi or RetroPie emulators) use the blob driver, and should I do that in the first place?