I’ve only one save of FF7 right now and I’m in the boat from Junon to Costa del sol, if I have the spell(s) you’re talking about I could try it myself. And yes, if it happens only with certain actions then it seems weird. Is the “sync drop” registered on your OSSC (meaning it says “no sync”)? Or it’s just on your tv (the picture goes black or something)? If it’s the former, yeah, don’t bother trying another HDMI cable, it means it comes from the OSSC itself or before that.