on 2 identical Computers (same hardware, i5, 8GB RAM, SSD, INTEL 530 HD graphics) one with ubuntu (20.04.2 LTS) and the latest xibo player, the other with windows 10 and the latest xibo player, ONLY the windows-pc can provide smooth performance and plays everthing as it should. the Linux PC (which would be my preferred system for the signage solution) ist stuttering and stucking with exactly the same content.
I have noticed the same performance issue. Are you sure that you have installed the correct .deb for intel HD on Ubuntu?
After installation the playback was a bit smoother but still not the same as Windows/Android(TV)
We have stopped using linux and now we are focusing on Android (TV) and Windows players.
the latest Intel GFX Driver is integrated in the kernel itself. there is no suitable downloadble file …
all files i was able to find were for Ubuntu 16/18 max …
i also updated BIOS Firmware to latest available now -> no change in behaviour !