<!-- HTTP Server -->
<allow v='127.0.0.1 192.168.0.0/24'/>
<!-- Remote Command Server -->
<command-allow-no-pass v='127.0.0.1 192.168.0.0/24'/>
Try replacing your remote access lines with the above.
The only way I can think of checking CPU/GPU usage is using top
I'd recommend going to Youtube and searching for "OLED vs QLED - With a Microscope! - What is the best TV?"
I'd post the link but I'm not sure I'm allowed to. Great video to explain the differences between the 2 technologies