[meowmoo]

Can anyone help? I like to provide data and do tests, I can not program.

Did you read the first post? I don't think so, since it reads...

[...] Also, it was noticed that the latest incarnations of Nox, have been designed to be cleaner, less CPU intensive in their operation. Please note this is not wrong these skins are excellent in their own right and done by some seriously skilled skinners so there work / direction should not be questioned.

But, saying that I felt there was room for the other end of the spectrum i.e. a version of Nox (Shdenox) that offered all the eye candy i.e. posters, disc, logos, clear art etc. etc. but the downfall from this is that this mod will probably require hardware at the high end of the CPU spectrum. I don't know if it would work on devices like Pi's etc. at the lower end of the CPU spectrum. [...]

So as you can see what you are asking for is impossible...

Hmmm thanks manfeed but that was not quite my question. The skin has to be optimized only on 4k. In 1080p he even runs very smoothly on my Odroid. And I've tested it in 4k even with the i3 of the 7th Intel generation. I think the hardware should be strong enough. Aeon Nox has similar features as: Clear Art, Live DVD Background etc ... I do not use fanarts, for example. And my CPU utilization is a maximum of 8% for all devices. I think it's a rendering problem.

http://forum.kodi.tv/showthread.php?tid=241359

So my question: Can the skin be optimized for 4K at short notice?

short answer : No

like manfeed said, I also think its the Hardware

With my main computer and good graphic card - ATI RX460 everything runs smoothly.

if it runs smooth on system a but not on system b, it could be that system b is running out of power