My advice is to get a USB to gigabit Ethernet adapter, something using the AX88179 chipset. They’re cheap.
Now this isn’t strictly necessary, the ethernet port on the Vero 4k is fast enough, but it’ll give you a bit more bandwidth to help out. Double what you strictly need for UHD playback.
If you’ve got a number of kodi clients already setup that may cause problems if you need to tinker to get better throughout. If nfs isn’t an option what about mounting the smb shares through fstab? that should give you the best smb performance, the client within Kodi isn’t well optimised.
You also might want to look at trying an iperf test to see how well your network is actually performing. The gigabit port might have enabled buffer free playback on your nuc, but that could be masking connection problems. In that the gigabit throughput might be pushing data fast enough to hide any dropped connection etc. this is what was happening on my network, I needed to replace an older switch.
With my adapter I can play all UHDs free of buffering problems using the in built kodi smb client (although normally I use nfs via fstab), but seeking and skipping is slower than mounting via fstab. Plus I spent some time making sure my network was performing as optimally as possible.
Ok cool. I have an Anker on the way to try and it’s realtek based. I’ll report what I get with it.
I can max out my 100 connection and hit 180ish on wifi in iperf. Oddly enough I found that any smb version other than smb1 in fstsb was only able to do 30-50ish on wifi. Wired was fine. Maybe smb2+ is more chatty and the increased latency bogged it down. (I had file permissions issues with smb1 going to a freenas cifs share)
I was having the same stalling/jerking/etc. problems playing certain 4K HDR content. The best (worst?) example was the documentary “TimeScapes”.
Initially, I was using the vero’s internal wifi, on a 5GHz band (too much interference on the 2.4 band). Then I tried an external wifi access point (attached to the vero via ethernet). That resolved all problems immediately.
I mention this because I had the same, but worse, problem with my RPi 3 (not with 4K content of course, just 1080p). When I used the external wifi, instead of the internal wifi, I had no more problems with transmission. I even tried a $7 USB wifi dongle, and that still worked. But not the internal wifi.
EDIT: However having looked at the recent replies on the MyCE thread it appears it may be isolated to just the two discs and possibly bad mastering on behalf of the studio. Still… they work on stand-alone players so it may be worth looking at if it’s an easy fix.
Tried to play the german Jigsaw 4K UHD today and the buffer was empty several times while playing the movie, had to pause and wait several seconds for the buffer to fill up to watch the movie without stuttering.
The overall average bitrate of this movie is 81.1 Mb/s.
No, I never played this movie before, but several other 4K HDR UHDs with a rather high bitrate.
I did not play it locally yet. I may test it again with an USB gbit adapter in the next few days and run a debug log.