I am currently running a RPi 4 8GB with Ubuntu 20.04 LTS on an M.2 240GB SSD. This system has no gui. I use it for GitLab and CICD purposes. On a x86_64, I know we can get a way with 0M for gpu memory in a Virtual Machine setup but not sure if there is something special to watch out for on the RPi 4. This is my first RPi.
Could the system still operate at 16M or lower for GPU Memory to give more memory to the CPU tasks?