Image sensor data when using no-rendering mode

I am trying to run CARLA with --no-rendering command-line option and alternatively set carla.WorldSettings.no_rendering_mode to True. I am doing this to reduce compute load on the laptop that I am running all my simultions. I noticed that the image sensor data coming from CARLA server also turns off I if enable no_rendering_mode. Is there way to turn off rendering in the main CARLA windows - and disable spectator view, while still receiving image sensor data. Note that other sensor types (LIDAR, Radar, IMU, etc) are not affected.