I can only speak firsthand for my own console (NTSC SNES mini w/ Voultars THS7374 bypass), but I have heard others report the same ghosting issue on PAL 1-CHIP consoles too. The amount of ghosting even also varies between different consoles of the same type. I can see it pretty bad on my setup, as it’s outputted from the OSSC in 1080p to a 55″ 4K TV. I’d imagine bigger screens make it look worse. I tested it on a tiny RGB CRT though and I can still see it.