RTSP dropping frames - 4.28.4.40 was better

My Cam V2 was updates to a beta a few weeks back (4.28.4.40). I got a new cam and it’s on 4.28.4.41.

It’s dropping frames in RTSP. Picture is not usable. It is smooth on the camera on older beta. How do I fix this? I want a copy of 4.28.4.40 but all references to it have been removed. All previous versions have been removed. Why?