HD bitrate lower than SD (Cam v2)

I got 5 cameras and have only installed 2 so far (ran out of time). My problem is that one of the cams has some weird issue where HD bitrate is staying around 20 kb/s and dropping as low as 1. As soon as I switch it to SD or turn on night mode, it bounces up to 80-120 like my other cameras has (which is actually further from the router).

The affected camera is literally 2 feet from the router on the other side of a wall (drywall + vinyl sidng) …has 90% WIFI signal. Firmware 4.9.4.108.

Anyone have any ideas?