That Mint install I did for the church PC didn't take after all. All of a sudden I lost the NDI functionality on OBS. I was able to get it on the Flatpack version of OBS, but then I'd lose the Nvidia codecs to help with streaming.
Found this version of Windows LTSC though. It didn't ask me for TPM and everything just worked.
Maybe I'll try the Linux path again, but that might be after I try an AMD graphics card on it. For now, that's all I have for it and it's working.
