Whoops, I should have mentioned that… Yes, this is the only console I’ve had problems with.
edit: Just tested it using a cheap SCART to HDMI adapter I had kicking around. It looks fine through that… This is definitely a issue between the SCART cable and the OSSC. Also, by SCART cable I don’t mean composite cables plugged into a SCART block. This is supposedly an RGB SCART cable.