LE 10 micro stutter on old Intel NUC

skymiga · September 19, 2021 at 7:53 AM

Hi!

I tried LE 10 on my old Intel NUC (D34010WYK / Intel® Core™ i3-4010U Processor (3M Cache, 1,70 GHz)) which is 7 years old now and get some micro stutter for 1080p videos.

I use the NUC on an Sony 4k TV and with LE 9.2 all is working as it should without any stutter with the same videos. Also a raspberry 4 with LE 10 has no issues with the same video and TV.

When I play 1080p videos with LE 10 on the NUC the systemload is very low by the way and 720p videos play without such micro stutter.

Is my NUC to old and not supported anymore for LE 10?

**chewitt** · September 19, 2021 at 7:54 AM Official Post

Are you using "adjust refresh" with a whitelist configured for doubling and 23.976/24/50/59.94/60 Hz modes? (if not, do that first)

skymiga · September 19, 2021 at 8:29 AM

Thanks for the tip, never used that setting before and will give it a try!

Are there any recommendation which settings in the whitelist should be configured?

**mglae** · September 19, 2021 at 9:42 AM

It was told the new Intel iHD drivers are not perfect on older HW but choose automatically. You can manually select them: RE: Issues on Beta 1 with X86

**blueribb** · September 19, 2021 at 9:31 PM

I have almost exactly the same NUC but the i5 version (DC53427HYE / i5-3427U) and have no stutter on any 1080p videos.

**chewitt** · September 20, 2021 at 5:53 AM Best Answer Official Post

Quote from skymiga

Are there any recommendation which settings in the whitelist should be configured?

As per previous post (#2): enable adjust-refresh with start/stop, then allow double-rates, and whitelist 1080p @ 23.976/24/50/59.94/60.

skymiga · September 21, 2021 at 7:26 AM

Quote from chewitt

As per previous post (#2): enable adjust-refresh with start/stop, then allow double-rates, and whitelist 1080p @ 23.976/24/50/59.94/60.

Thanks, that worked!

I just set the "adjust-refresh with start/stop" without whitelist. As i tried a 1080p video the first time (and as i forgot to save the selected whitelist ) the player crashed where the first stutter normally appear but after a reboot and without whitelist 1080p videos play smoothly.

Chewitt - Just because i want to understand the background of it and the functionality of whitelist -
Why did you exclude the 29.97 and 30Hz from your list?
Any clue why i had the problem only on 1080p videos and not on 720P
In case of no whitelist - that means that a video is upscaled to the TVs 4K and the refresh rate is taken form the video coding?

In case i use whitelist - wouldn't it be necessary to whitelist the 720p resolutions as well?

**chewitt** · September 21, 2021 at 11:21 AM Official Post

I excluded 1080p @ 25/29.97/30 because with "double rates" allowed Kodi will switch to 1080p @ 50/59.94/60 instead and this also allows Kodi to better handle interlaced content: Kodi ONLY outputs progressive so to handle 1080i @ 25 (PAL) you need 2x progressive frames to render each 1x interlaced frame. This works at 50Hz, and drops 50% of frames at 25Hz. You can also whitelist 720p (and SD) modes if you want, but Kodi handles 1080p scaling well (as well as most TVs) so it's not normally needed. In the case of 4K media most TVs handle 1080p > 4K scaling better than Kodi, and the Kodi GUI is much snappier for navigation at 1080p (as 1/4 the data is being processed) so it's better to leave Kodi desktop resolution at 1080p (TV scales to 4K native panel resolution) and use the whitelist so Kodi switches to 4K modes only when actually needed for (hardware decoded) playback.