I didn’t seriously think NUC10 would be worse than NUC8, but I did more reading for i5 and i7 class offerings, and checked a bunch of benchmarks. GPU of NUC10 is definitely worse, so Windows users should forget it. ROCK does not depend on the GPU though. In terms of CPU, while single-thread performance is (I think) the most important for Roon DSP, it’s not entirely consistent across different benchmarks, but if I have to pick a winner it’d also be NUC8.
For the purpose of Roon, my preliminary position is that NUC8i7 or i5 is better than NUC10i7 or i5. Only those who care about energy more than performance should consider NUC10 over NUC8, when official support for NUC10 becomes available.