Using jitsi docker Video is hanging after 1 mn

Hi Dear
we installed the jitsi meet docket on our server, the video call is hanging after about 1 mn, audio continue working fine.
we made the same test on the meet.jit.si using the same laptop the same connections, the video is working fine and we didn’t face this problem.

what could be the root cause : the docker itself does’nt provide the same performance, or configuration issue or what else?

thank you in advance for your quick response!