Thanks for update! ETA for Windows version? Does you look into video playback freezes?
I hope for the Windows version soon - though does not depend on me, but on the code signing authority. But in case it takes to long I will put an unsigned version online and re-upload with code signature once it is done.
Wrt your other question: yes, the new version can allow either all or one specific card to use only one mining thread, freeing some resources for other tasks. At least on my desktop it did help to be able to browse and play youtube while the first card was mining - then a bit slower, but it was working.
New parameter for it is --singlethread
I tried --singlethread option for RX 580 8Gb card. It decrease speed about 2% (0.6MH/s). But videoplayback on videoplayer using DXVA videooutput didn't became normal. It still like slowmo... Youtube videoplayback is normal. It can freeze only on high resolutions like 1060p.