Low FPS on gazebo

[LostEchoDX]

Hello,

I am a complete beginner regarding this whole topic, I would just love to get a drone simulation ruinning for my team to develop with, so please excuse any potential ignorance.

I've managed to get everything running but gazebo is running at 1.2 fps with a real-time factor of 0.9. Gazebo outside of docker runs at 60 fps, it's just the demo gazebo.

I've noticed running gazebo from the container returns this error:
libGL error: MESA-LOADER: failed to retrieve device information
libGL error: Version 4 or later of flush extension not found
libGL error: failed to load driver: i915
libGL error: failed to open drm device: No such file or directory
libGL error: failed to load driver: iris

After some digging on the internet, I believe this might be an issue with newer versions of mesa not supporting i915 but I can't seem to get a proper mesa package running for the container.

I am using Ubuntu jammy 22.04

Any help with this is greatly appreciated.