OSSC is not losing the sync, in fact it’s only the TV. If my memory serves me right, I think I purchased the cable from Consolegoods.co.uk. I can’t actually say for sure if it was a one with CSYNC or not. the SFC is not a 1-CHIP model. Should I try a CSYNC cable from retrogamingcables or are there some other tips for adjusting the settings on OSSC? For clarification, this problem only persists with 2x mode.