I use this mainly for upscaling arcade hardware to modern displays, JAMMA boards, CPS1-3, NeoGeo. The product works mostly well but I get washed out colors and overly bright whites alot. Some JAMMA boards would sync at 1080 but the picture would be jumping up and down running in 720P mode seemed to correct this. There isn't alot of documentation on the options in the menu, most of which are pretty straight forward but definitely a few head scratchers I had to look up. Questions and support responses came pretty quickly at first but after a couple of short emails the maker stopped replying to emails which was rather disappointing as I have several issues not quite resolved. Also reviewing the mod itself I can't confirm it but seemed like some shortcuts were taken.
Edit: I was able to update the firmware and work out many issues I had with color/gamma being washed out. I did not request a return as the product worked for its intended purpose. My major complaint was the sudden drop in communication, I understand you can't offer unlimited support but if you can't or are unwilling to help I don't think its too much to ask for you to just say so rather than just stop replying to emails. That being said I still recommend the seller and the product for someone needing to upscale arcade hardware.
Response from Chipnetics Computing | Oct. 22, 2021
Max, I sent you 18 emails working through your specific setup with you, as best I could. To see a review 10 months after your purchase, despite that, is a surprise. I'm happy to help all my customers with email dialog, to a point. Eventually, with a family, career, mortgage and life, I have to move on to other customers needs. A purchase cannot entail unlimited email support. I've always been receptive to returns, which you never requested; and leads me to believe you're more upset that I did not continue chatting with you above all else. For that, I apologize.