I have headless Raspberry Pi 4B 4GB Bullseye connected over USB-C to iPad Pro and I am using VNC to connect to it directly over a USB-C cable which also powers it. I have increased GPU memory to 256 and I am at 1024 resolution. However the performance of the system over VNC is unusable.
I have noticed that the performance gets fluent if I use raspi-config to switch to composite video but that of course has resolution limit to 720 which is too small and it displays as a small view in a corner of the iPad.
I have also tried switching to NoMachine but it doesn’t seem to help. I have bought the Raspberry to be used this way with my iPad but I can’t seem to resolve the performance issue. Can you please advice?