Hope someone with more knowledge can help me out with this.
Just upgraded to 4k setup everywhere, but playback of the files seems impossible due to stuttering/buffering. I’ve verified that everything works if using ethernet, but I can’t draw cables in a sane way.
This is still a lot less then what you posted first and this is the one that counts.
Try changing what channels your wifi transmits on and redo the iperf3 test, keep changing channels until you see some improvements.
@darwindesign beat me to it on the caching parameters. One other observation is that you’re using WiFi channel 100 that is a DFS channel, so might show breaks if it feels the need to jump to a new channel.
I had kind of the same problem, all media on a dedicated server (that also runs mysql for among other things kodi), and the vero 4k+ had some issues playing back the files on wifi, my tv can play those same files via upnp and is wireless. With some tweaking I could play most files wireless on the vero but skipping forward/backward was significantly slower than with a cable. So i use a cable.
(I could even use my laptop as kodi upnp server (files still on dedicated server), wireless on both laptop and tv)
My conclusion was that both the tv and laptop has a 2x2 antenna and the vero 4k+ only has 1x1.
Increasing the cache size and the readfactor in kodi was what made it better for me, but I would have needed more ram for it to be really useful (those 4k movies are huge which fills the cache fast). (using and external ssd for the cache could probably be an option, but it would add more cables and that was what I was trying to avoid)
I took some days testing and mailing back and forth with @sam_nazarko who was helpful. I’m satisfied with my setup, it plays everything silky smooth (hdr10+ is the only thing on my wishlist, but my tv can play those via upnp until the vero can do that too).