Dual PSU causing code 43?

[cryptbro]

So I've got an MSI 1060 GAMING X 6gb... big red fucker that uses way too many watts, always been the problem etc. that recently has been giving me code 43 as I've been moving it around while adding new cards to the rigs. Tried switching risers, PSUs, even rigs with less cards, updates, new drivers (the usual). I can get this thing to work when it is the only card on the board and JUST had it working with 5 other 1060s until I turned it off to do some cable management and powered back up to get 43 again. I run dual PSU's on my rigs with the Add2PSU adapter to get them running. Never had any problems with them on the rigs and this is the only card that isn't having it. All PSUs are 850+ and never more than 4 cards on each. There's literally only 2 other cards on the PSU it's connected to now.I'm beginning to think this electricity hog just doesn't like sharing and or is unstable with multiple cards even though I had it on an 8 card rig for about a month without problems until I moved it (of course). Anybody else had a problem like this before? My brother's got a Zotac 6gb he's willing to swap me for so if I cant figure it out tomorrow I'll probably just screw this thing and switch since apparently it works on it's own, just always been the problem child. Anyway im done for the night but if this sounds familiar to any of you guys any input would be appreciated!

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[Undefined31415]

What operating system are you using on your rigs?

Have you independently tested the card in question?

[baga105]

There should be problem in 2nd psu.. Do you have updated drivers?

[0xcosmos]

have you checked your bios is at latest version?
have you enabled 4g decoding and set the pcie lane speeds to gen1?

[cryptbro]

What operating system are you using on your rigs?

Have you independently tested the card in question?

Windows 10 fully updated. tested card independently and it works just fine. Seem to only like being the only card on a mobo. Strangest thing.

There should be problem in 2nd psu.. Do you have updated drivers?

Yup all drivers latest version from Nvidia. Weird thing is it works on its own so not sure it can be a driver issue and I think its more related to a PSU or power delivery issue.

have you checked your bios is at latest version?
have you enabled 4g decoding and set the pcie lane speeds to gen1?

Latest BIOS installed with Gen2 and 4G etc.