Reply To: 240p passthrough works fine but line2x does not

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#26701
nmalinoski
Participant

Does your TV actually support 240p over HDMI, or does it think it’s 480i?

The NES and SNES are known to have imperfect sync signals, and I want to say the Master System and Genesis have their own sync issues; so, if you don’t have a NESRGB with a separate dejitter mod, or a NESRGB 1.x with the latest firmware (trades palette selection for dejitter functionality), or a 2.0 or newer NESRGB (has dejitter built in), or a dejitter mod or a combo RGB bypass/dejitter board in your SNES, then I’d say it’s possible that your TV has different processing algorithms for SD, ED, and HD content, and janky sync is what’s causing you problems with ED/HD modes.