Since upgrading from 17.10 to 18.04 my video streaming and amimations have become choppy. Running glxgears it can be seen that the animation stops and then starts again every 3 seconds or so. The same with video streaming, the picture stutters every 3 seconds. This happens using the Intel GPU and also using the nVidia GPU via Bumblebee (Optirun).
Does anybody have an idea what could be causing this?