I haven't tried the official OS but with Alpine I had to enable a DT overlay (IIRC vc4-fkms-v3d) and install the relevant mesa driver (probably mesa-dri-vc4) to get X performance to a level where it's not absolute misery. Some other tweaks were required too to support my screen resolution.

For Quake3, you may have to change the renderer to opengl1 or try q3lite. See https://forums.raspberrypi.com/viewtopic.php?t=247841

(I have not tried Q3 myself but I know it can run, it even runs on RPi1. There are videos on youtube)