hello felixch,
please check developer guide with CSI and USB Camera Features, the image resolution is validated up to 3280x2464, and the frame-rate is 21-fps.
it’s camera application and EGL streams consume CPU resources, mostly CPU usage was taken by argus_camera application due to buffer transmit. besides, camera pipeline still need CPU to run lots of algorithms like 3A.
so, you may try enable AELock and reduce the frame-rate if would like to reduce the CPU usage.