Hey guys I have a temporary fix for everyone mining with the windows wallet. The guide is for protoshares, but works great for noir. Using this guide, I am now mining with four threads in windows.
https://cryptocointalk.com/topic/1505-how-to-mine-protoshares-with-multiple-instances/For every qt you launch, you will need a different port for its respective .bat file.
Once you have followed these steps and have multiple qt's open, start one thread for every qt you have.
If this helped you here's my noirshares address if you're feeling generous

: 9qFFXrXAtp5Khcn1dZhDes6TN3gsxoc2r5