Bizarre flickering when using three monitors

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DirectorHaruhi

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Jul 3, 2017
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Hi, I recently started using three screens, and since I have I've had some weird flickering issue where one or all of them will flicker to static or something for less than half a second, so quick I can't actually tell if it's static or if it flickered black or whatever else it could be.

My setup right now is a Sony TV, which is the newest connection, connected over HDMI. The other screens are an Acer monitor and a BenQ monitor that's set to 144Hz (The issue doesn't happen when it's set to 60Hz, at least I haven't seen it) all connected to a GTX 780 that's in SLI with another 780.

What could be the cause of this? Any ideas as to how I can fix this? Tried using other cables, doesn't seem to be the issue.
 
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DirectorHaruhi

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Jul 3, 2017
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Just the Benq monitor is 144Hz.

Sony Bravia kdl-46ex650 connected over HDMI
Acer S232HL bd over DVI
BenQ XL2430T over DVI

The flickering seems to be a diagonal black and grey pattern.
 
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blockhead78

blockhead78

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Apr 7, 2011
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your drivers up to date?

a quick look at the nvidia forums and there are quite a few people suffering from flickering issues similar to yours when using 144hz

some have resolved them with driver updates, but some haven't.

quite a few seem to have resolved it by dropping to 120hz
 
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DirectorHaruhi

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Jul 3, 2017
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I've tried dropping to 120Hz, same issue. I recently installed a RAM stick from a kit that isn't the same as my current kit, as one of my old ones died. Same speed and capacity, but from a different kit. Perhaps the RAM slot on my motherboard is faulty since I ran memtest on that particular RAM stick and it found no issues?

Drivers are up to date.
 
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blockhead78

blockhead78

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hmmm possible, but unsure

have you tried testing it without the new ram stick?

also, have you got any manual CPU/GPU overclocks applied? if so, would be worth setting everything to stock and seeing if it persists

maybe try with sli disabled and see if it still happens?
 
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DirectorHaruhi

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Jul 3, 2017
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Tried disabling SLI, no change. No overclocks either. Will try without the new RAM stick.
 
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