[Nalatroz]

The Elgato capture card should work for 480i(Passthrough and x2[At least])/480p (Passthrough) 240p (Passthrough, 2x, 3x, 5x(if set to 1920×1080, though the capture card couldn’t capture 60fps)) as the Game Capture HD is on the older side and might have issues with non regular resolutions, it might work with the other modes but from what I can tell you would have to use OBS instead of the elgato software.

The Elgato Game Capture supports the following resolutions as far as I can tell:

1080p (simultaneous 60 fps pass-through and 30 fps capture), 1080i, 720p (60 or 30 fps capture), 576p, 576i, 480p, 480i, 288p, 240p

To be honest I wouldn’t trust the ebay capture card very much it doesn’t even list supported resolutions aside from 720p/1080i.

To be honest though it might be on the more expensive side I’d recommend the Avermedia GC573 as it works great with my OSSC.

[Nalatroz]

I’ve never had had the shimmering happen with my NTSC PS1 (SCPH 5501), I did have slight issue with the OSSC rapidly switching the HZ while playing Star Ocean Second Story(and only this game for whatever reason) but that was fixed by restarting the OSSC and I haven’t had it happen since I switched to a SCART cable for input from a HD Retrovision(Sega with the PS1 Adapter) component cable.

[Nalatroz]

If you could record it in action if possible would be awesome as well, though since you mention it looks like waves I doubt it’s the deinterlacing. Sounds somewhat like a poor connection somewhere because I haven’t seen a wavey image since my old CRT computer monitor died in the early 2000’s. What kind of TV/Monitor are you using?

[Nalatroz]

I know the Avermedia GC573 supports some PAL resolutions at 50hz (or 60hz for that matter).

[Nalatroz]

Out of curiosity is that screen 240p/288p or is it 480i/576i because on my NTSC PS1 the logo screen is 480i; if it is does your PS1 profile have 480i/576i set to 2x? Because that shimmering might be the deinterlacing.

[Nalatroz]

By barebones do you mean straight into a TV or Monitor or into the OSSC then to the output device? In this situation I’d want to check if the consoles are working properly; so if possible try to test the consoles without the OSSC.

Another question, does it happen with only a particular game or all games test?

Does the display on the OSSC show any information like a fluctuating resolution or a change in the HZ?

Do you have any other consoles other than the Wii and the modded N64 so you could possibly test them?

[Nalatroz]

Okay, try the 0.82 firmware(https://www.niksula.hut.fi/~mhiienka/ossc/fw/) also does the display on the OSSC have the HZ change when the saturn’s on, because occasionally my ps1 gives the OSSC a fluctuating HZ(Only in Star Ocean Second Story NTSC-U for whatever reason) which causes my GC573 to throw a fit and randomly lose signal. Which I fix by resetting the settings on OSSC and reloading my profile and restarting the PS1.

EDIT:
Also NTSC or PAL?

[Nalatroz]

Does it happen if you connect the OSSC to a monitor?

[Nalatroz]

Is there any other HDMI device(Audio Extractor, Splitter) in between the OSSC and the capture card?

[Nalatroz]

Yeah sounds like your HDMI Splitter is causing the issue, I run into a similar issue with the HDMI audio extractor I use for my modern consoles so I can hook my headphones up to the extractor and not my monitor 3.5mm jack(Which is just inconvenient for me being behind the monitor) .

It might not be able to handle a 480i HDMI signal. Have you tried forcing a 480p signal through GSM?

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