I think 18 to 26 frames per second does not sound right. It's neither fast nor synchronised with the video refresh. Unfortunately, I don't know how to fix this.glxinfo appears to show an accelerated v3d context so perhaps this is the best the Pi 3 can do.
Have you tried the legacy Bullseye release of Raspberry Pi OS along with the legacy video drivers? Use raspi-config to choose the driver.
Statistics: Posted by ejolson — Sun Dec 17, 2023 7:19 am