- Configure Camera via Webinterface to the minimal fps and resolution and bit rate => no changes streams lags again
- Configure zoneminder camera using TCP ( zoneminder hangs when using webinterface ), UDP Zoneminder lags, HTTP ( seems to camera passthrougt ) stream lags too but ZM interface works almost without lags
VLC stream works fine : rtsp://user:pass@IP/h265Preview_01_main
VLC stream works fine : rtsp://user:pass@IP/h264Preview_01_main
ZM does not record audio by default, right ?! Disable Audio in camera - no changes :/
Streamsource in ZM changed to H265 Stream - sems to work correctly, but when i try to watch a record ZM hangs => restart via ssh connection

i found some infoa about motion detection ( https://wiki.zoneminder.com/Dummies_Guide ) but my CPU does not raise very well when activating 4K analysis ?!