RTSP live feed crashes

Hello. Hopefully this is right place. maybe not.
I am super new to home assistant and still learning alot.
Been pulling my hairs with rtsp live feed.

I’ve added Generic camera with rtsp IP to my camera in intergations.
I added Picture glance card with that camera entity and chose live feed.
Everything is working for about 10 secconds after I restart HA.
after 10 secconds the live feed gets about 1minute delay and after that its just still picture. No live feed anymore.
If I press on the card to get bigger picture, I get refreshed still picture. but no live feed.
I restart HA again and I get 10 secconds of live feed.
And for some weird reason, the camera itself keeps disconnecting itself from wifi.
I 've been using this camera for the past year with VLC network stream. it worked fine, no crashes, no delays etc…
But now, if HA is trying to connect to the camera, even VLC live feed goes away and I dont see camera on the network anymore.
If I remove camera card, everything comes back alive without disconnects.
So its something to do with HA also.
I tried “webrtsp” addons etc with youtube tutorials, none of them worked and webrtsp found the camera, but did not show any live feed or still images.
Camera is connected to my router that is located 5m from it
Camera has codec h264
How can I get live feed from my RTSP camera that actually works?