Just share my experience with my recent purchase of a Tuya CCTV.

Reason for the Purchase:

1. My old Xiaomi CCTV installed at my car porch running on 2.4 GHz keeps on being disconnected or the signal unstable. When I check on the number of WiFi APs discovered outdoors compared to indoors, there are simply too many, and some more are using 40 MHz bandwidth for their channel. 

2. I need CCTV that supports 5 GHz (low latency and less interference).

3. CCTV that supports the RTSP protocol can be viewed from HA or any app supporting the RTSP protocol.

The result is within my expectations, except the video quality is not as good as my other 2K FHD Xiaomi CCTV.

I don't mind buying expensive Xiaomi CCTV or quality products if they support 5GHz and the RTSP protocol; otherwise, I will be locked into their ecosystem and not easily integrated into the HA.

NOTE: Not all CCTV supports the RTSP protocol.