[lwrcase]

Can you confirm the build when the stuttering starts - is it #0817, #0818, #0819 etc.?

The fix for the GUI stutter that was added in 4.17.y is still present in these 4.18.y builds:

https://github.com/LibreELEC/LibreELEC.t...mode.patch 

i've tested clean installs of #0815 back to #0711 and the stutter/jitter issue exists in every version i've tested to some degree. the earlier versions are a little less severe than the latter. i've also retested #0708b and found that the issue still exists intermittently. not sure if this has anything to do with BIOS update 066 which i did perform recently. 

Hard to say. We tested the original stutter issues and everyone seemed happy that the problem had been solved - it would add more weight if those same users now said the problem had returned. If it's only your system that has a stutter problem, and you recently changed the BIOS, then it may be more than a coincidence - can you revert back to your old BIOS, and/or clear the CMOS and reconfigure? 

just tried it. still has an issue with both #0821, #0711 and #0708b.

log: http://ix.io/1kZF

also ran the output of cat /sys/kernel/debug/dri/0/* :
http://ix.io/1kZH