I've had in my possession a RetroTINK-4K by Mike Chi @retrotink2 for about 2 months now. Using original PS1 hardware with this thing has yielded mind-blowing results. Below, I have examples of HDMI(mod) vs. RGB SCART, both being upscaled to 4K. Can you tell which is which?
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@MGSMGN @retrotink2 It's weird since the aspect ratio change in every screen, the top left screen is stretched horizontally compared to the top right and the bottom left is stretched vertically compared to the bottom right.
@MGSMGN @retrotink2 My guess is Left RGB, Right HDMI