The issue seems to be specific to RetroArch, standalone emu like ReDream look both sharper and don't have screen tearing.
In RetroArch.cfg i've already set the following to no avail:
video_refresh_rate = "50.000000" video_vsync = "true"Contributions to the project are always appreciated, so if you would like to support us with a donation you can do so here.
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