Just started to add ip-cams to HA. Discovered the problem that no platform is really the right. Either they are lagging or it takes to much time to load.
So I started searching and found webrtc-streamer https://github.com/mpromonet/webrtc-streamer
This streams rtsp-streams nearly realtime and loads up very quickly.
Going to bump this because I think there’s still a need to have low-latency camera feeds as a built-in feature of Home Assistant. WebRTC is a bit fiddly to set up.