So someone asked me if I could help them get streaming running without using UStreamCaptcha and Winblowz 10. I knew this was possible but just hadnt documented the steps to do so myself and the steps are missing on the tutorials page for the newest version of OBS (Which is OBS Studio). So if mousetopher or whoever maintains that streaming page is interested in updating it for Windows 10 here is what we did:
Download OBS 23.1.0 (64bit)
Add new "Display Capture" add it using all the defaults.
Right click the new "Display Capture" and select "Filters
Create a new "Crop/Pad" filter
Uncheck "Relative" (This is not optional, it will not capture correctly if relative is enabled).
Once relative is unchecked, new options "Width" and "Height" show up.
Set Width to 640
Set Height to 480
Click close
Right click "Display Capture" again and select "Fit to Screen"
And thats it. It's a much easier process than UScreenCaptcha but it's not native so it does use more CPU power than using uscreencaptcha but we didnt see much performance loss. I still prefer uscreencaptcha but this is a good way for new players to stream without the complexity of setting up UScreencaptcha.