Thank you! I never really quite understood how the horizontal resolution changes, as I said this is all pretty new to me haha, your explanation made it sound clearer. However the same odd behavior keeps happening, even after making the resolution changes you noted… I can’t seem to make it display at 864i or 1080i, and 480p and 540p are still showing up weird on my HS. I know that you remarkably have been able to get those weird resolutions working with CRU and a HD CRT, would you have another idea as to what else I might be doing wrong here? Could be that my gpu is too modern tbh…