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I'm sorry for the experience but honestly I can't do anything without reproducing it and I haven't been able to so far. I understand Echogram players provide a different experience per device since it's counting on a hardware (cpu, ram)/software (codecs) combination to play smoothly during stream (fetching data from telegram api).
I suggest you'll provide more details on the player you use, the hardware acceleration setting, the video formats you use and are failing and maybe I'll be able to pinpoint the issue. Maybe even send me a video that fails in a private message so I can check if it has any special format.