High CPU usage when connected to xmeye(onvif) based recorder.

[Rafał Ligęza_320858105589990]

I'm using in home NVR NBD8025R-UL with 8 cameras. 3 of them are reolinks (connected with ONVIF protocol). I lately discovered that when connect to this NVR the CPU usage in reolink cameras is very high.
On the picture below you can see CPU usage red - CX410W, blue - RLC-410-5MP, yellow - RLC-410W. When I turned off the NVR between 16:45 - 18:15 the CPU usage was much lower. I tried disabling motion detection on NVR and it didn't helped. After 19:40 the CPU in two reolinks is lower and I think it's because it's dark outside. Any ideas why the CPU usage is so high and how can I improve it?
edit:
I checked also frigate and the same situation. When camera cx410w is connected to frigate there is also high CPU (cpu inside camera) usage. My frigate config:
go2rtc:
  streams:
    cx410w:
      - rtsp://admin:d505698245@192.168.5.119:554/Preview_01_main
    cx410w_sub:
      - rtsp://admin:d505698245@192.168.5.119:554/Preview_01_sub

cameras:
  cx410w:
    ffmpeg:
      inputs:
        - path: rtsp://192.168.5.206:8554/cx410w
          roles:
            - record
        - path: rtsp://192.168.5.206:8554/cx410w_sub
          input_args: preset-rtsp-restream
          roles:
            - detect
    detect:
      enabled: false # <---- disable detection until you have a working camera feed    

[joseph_1979]

@rafał-ligęza_320858105589990 use one stream, the sub stream only. Try to lower the resolution and check again the cpu usage.