changing DP cables, doesn't help, neither latest BIOS.
There is some talk about driver rollback, but haven't tried it.
Had similar issue setup up 2x 5i5MYHE, all the same. One works fine one flickers screen after wake from standby. So I returned the problematic one, but haven't received new one yet.
Now yesterday same issue with new 5i7RYH.
It could also be hardware malfunction.
I will test the NUC5i5MYHE and update this thread as soon as I get any information about this matter.
I can confirm that downgrade to 4080 driver solves problem for 5i7RYH.
There was however missing link on intel's website, which now points to old driver as current, but download didn't work, but now when checked is good again.
Thanks for the link, I found it in alternative link in between and works as well as for the 5i5RYK model with both 4080 + new driver 4267b (I think it is)