How to enable MPO support on my main screen?

[PUR3]

On windows 11 24H2 so DXGI is MPO now and I have too many issues with WGC to be able to/want to reliably use it.

For clarity: My PC definitely supports MPO as DXDiag shows it at enabled (MPO MaxPlanes Value of 4 and everything else as enabled) on my crappy secondary LG screen that I just use to have discord or a webpage open while I play.

It does not, however, say this for my main screen (Samsung Neo G9 - LS49AG950NUXXU, the non-OLED).

I've read around here that there are ways to potentially get it to enable, like disabling multiple screens, but even when I unplug the second screen and restart my PC the main one still doesn't show as MPO supported...

Any ideas about what else I can do to get this to work? I can't really seem to find much info on how to enable MPO online, hundreds of pages on how to turn it off though... >:(

My specs if relevant:

MSI MEG Godlike Z390
i9 9900KS
RTX 3080Ti

Thank you guys.

[Gizzmoe]

Maybe this helps:
https://steamcommunity.com/app/993090/discussions/0/6687373800505272350/?ctp=2#c6687373800508149189

[Eternal Ohm]

MPO support is also GPU driver related.

Make sure your Nvidia GPU driver is updated to the latest 566.36, for some reason on this new driver DXGI now works completely fine for me on Windows 11 24H2 where it just straight up didn't work at all before.
This is despite the fact this driver makes no mention of changing anything about MPO, so I'm really not sure what's going on here and why it seems to have just suddenly started working.

Additionally make sure RTX Video Super Resolution is disabled and RTX HDR is disabled, either of these being on disables MPO.
Also G-Sync support in Lossless scaling doesn't seem to work correctly even on DXGI here, so I'd recommend turning that off, but of course you should test for yourself here.

If relevant I am using the Lossless Scaling beta.

[PUR3]

Originally posted by Gizzmoe:

Maybe this helps:
https://steamcommunity.com/app/993090/discussions/0/6687373800505272350/?ctp=2#c6687373800508149189

Just tried it then restarted PC and sadly no change, thank you though.

Originally posted by Eternal Ohm:

MPO support is also GPU driver related.

Make sure your Nvidia GPU driver is updated to the latest 566.36, for some reason on this new driver DXGI now works completely fine for me on Windows 11 24H2 where it just straight up didn't work at all before.
This is despite the fact this driver makes no mention of changing anything about MPO, so I'm really not sure what's going on here and why it seems to have just suddenly started working.

Additionally make sure RTX Video Super Resolution is disabled and RTX HDR is disabled, either of these being on disables MPO.
Also G-Sync support in Lossless scaling doesn't seem to work correctly even on DXGI here, so I'd recommend turning that off, but of course you should test for yourself here.

If relevant I am using the Lossless Scaling beta.

Oh! I had no idea those two features disabled MPO, I had VSR in auto mode but even after turning it off and restarting PC my main screen still says MPO MaxPlanes 1 :(

I hadn't noticed the new driver update, will get that installed and do some testing after work, thank you!

[Whitelight54]

Wanted to mention for anyone else looking, it was the Nvidia Image Scaling setting that was causing MPO planes to say unsupported for me. Disabled that and now it works for me again.

Only found that due to this steam thread talking about those other nvidia settings disabling MPO, so thanks for the help on that. Hope you get it working too PUR3.

[PUR3]

Originally posted by Whitelight54:

Wanted to mention for anyone else looking, it was the Nvidia Image Scaling setting that was causing MPO planes to say unsupported for me. Disabled that and now it works for me again.

Only found that due to this steam thread talking about those other nvidia settings disabling MPO, so thanks for the help on that. Hope you get it working too PUR3.

Ah! Good bit of info there.

Sadly I never managed to get MPO to work on my main screen but it's not a big deal anymore as recent nvidia drivers and windows updates have made DXGI work correctly for me again, thank you tho!