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NVIDIA G-Sync and SLI issues [SOLVED] - Page 2

post #11 of 21
Quote:
Originally Posted by Renairy View Post

OK update..... and damn i am so relieved.

Was using perfoverlay.drawgraph 1 in BF4 to monitor the spikes and the yellow bar (CPU) was the culprit.

After disabling core parking, the spikes are no more.
I hope this is an official fix and it helps everyone with the G-Sync and SLI issue.

Will continue to update this thread should anything occur.

Are you using windows 7?
post #12 of 21
No issue here in two rigs slied with two swifts. Butter smooth.

Evolve, dying light, som

Only fc4 had some initial issues. But gonna revisit that game later.
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post #13 of 21
Thread Starter 
Update. So G-sync and SLI are officially NOT perfect.
Some games work, some games don't.

Depending on the SLI rendering methodology, GSYNC will alter its behavior.
This is pretty big news.
Quote:
Originally Posted by alexp247365 View Post

I think it depends on the game. I had 980's sli with G-Sync enabled in FFXIV. While it showed my framerates at 100+, I could see the micro-stutters. Disabling SLI and using only one card kept my frame-rates high, as this is a cpu bound game. The Micro-stutters disappeared.

G-sync looks alot better when there are no micro-stutters. Using a Rog Swift, btw.

I think you're right. It does all depend on the game.

Quote:
Originally Posted by kamimaru View Post

I thought core parking issues was a Win7-thing ... how did you think of that ?

Well since the CPU was spiking, i went over my overclock, un did my RAM OC, Hyperthreading, everything.
Nothing fixed the issue.
Used a program called park control, had it for a while, un parked all cores and it worked for BF4, BF3, Hardline.

Quote:
Originally Posted by Dmitriy View Post

I have 980 sli and swift and zero issues.

Try playing Advanced Warfare with SLI. It uses Alternate frame rendering via the driver. Also has a 90 FPS cap that u cannot remove.
Come back here after you finish wiping the tears away.

Quote:
Originally Posted by Nizzen View Post

Are you using windows 7?

Windows 8.1

Quote:
Originally Posted by cstkl1 View Post

No issue here in two rigs slied with two swifts. Butter smooth.

Evolve, dying light, som

Only fc4 had some initial issues. But gonna revisit that game later.

Sorry to say man, the more games you try, the more you will discover.
I hope you dont have any problems, and i hope im wrong, but its starting to make some sense to me.
Edited by Renairy - 3/29/15 at 9:52am
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post #14 of 21
Thread Starter 
Back to square one.....

Massive stuttering in almost all SLI scenarios.
I'm confident to say that SLI and Gsync are definitely incompatible at this stage, well at least in my environment.
Even tried re-installing windows.

1 card works perfectly fine with g-sync. Its quite an experience.
Once second card is activated, my games become literally unplayable.

sadsmiley.gif
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post #15 of 21
Quote:
Originally Posted by Renairy View Post

Back to square one.....

Massive stuttering in almost all SLI scenarios.
I'm confident to say that SLI and Gsync are definitely incompatible at this stage, well at least in my environment.
Even tried re-installing windows.

1 card works perfectly fine with g-sync. Its quite an experience.
Once second card is activated, my games become literally unplayable.

sadsmiley.gif
Are u running with 8gb n pagefile disable?? Suspect not enough ram. 16gb pagefile disable was barely enough for my titan black sli. Thinking about.. All my insufficient ram issue started when i went gsync route. Pagefile enabled did solve some issue but not as smooth

Think its a ram swapping issue. Gsync very sensitive of ram reseved. Enable ab minitoring
Theres two osd for ram. One is system ram used n the other is pagefile ( i call it reserved ram ). Whats the second one at.. If hitting 8 n above. Theres ure issue.
Edited by cstkl1 - 3/29/15 at 11:19pm
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post #16 of 21
Quote:
Originally Posted by Renairy View Post

Back to square one.....

Massive stuttering in almost all SLI scenarios.
I'm confident to say that SLI and Gsync are definitely incompatible at this stage, well at least in my environment.
Even tried re-installing windows.

1 card works perfectly fine with g-sync. Its quite an experience.
Once second card is activated, my games become literally unplayable.

sadsmiley.gif

If you only have 8GB of RAM, you should seriously consider testing with 16GB before you lose all hope on that setup. 8GB is really pushing it with some games, and considering the money you have invested in the setup, I'd consider it mandatory if there's even a chance of it causing frame drops.

For the record, I had a similar setup (ROG Swift and 2x 780 Ti) and I never noticed stuttering with gsync on that wasn't there with it off. SLI does cause an increase in frame time variability over single card setups, but the difference isn't much on average.

I would recommend turning off gsync and recording frame time graphs. gsync will not eliminate stutter caused by wild swings in frame time variation (for example, if the first frame takes 10ms to render, the next takes 40ms, the next takes 10, etc., nothing will help the stuttering in that situation.) However, you should ensure that the graphs between SLI/gsync on and SLI/gsync off look the same. If they do, I would then record the same graphs on the same benchmarks with SLI off/gsync off and SLI off/gsync on. Having all 4 sets of data with everything else held constant will help you put your finger on what objectively is causing the problem you feel.
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post #17 of 21
Thread Starter 
UPDATE 4
Seems to be working much better now, not perfect but much much better.
Tried different RAM and such so YMMV.
Edited by Renairy - 3/30/15 at 9:49am
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post #18 of 21
Let's just say SLI is not perfect, there is no evidence to suggest that Gsync has anything to do with the stutter you see. When will people realize that Gsync can not fix the any stutter, just the one that is caused by Vsync.
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post #19 of 21
I have been running quad sli 690s and gsync since the swift came out, and i have had no problems. I would look elsewhere in your system for the source of the problem. Gsync is pretty much flawless, sli is a bit spotty depending on the usage, so dont blame gsync+sli, blame sli or something else in your system
post #20 of 21
Thread Starter 
Quote:
Originally Posted by Xotic View Post

I have been running quad sli 690s and gsync since the swift came out, and i have had no problems. I would look elsewhere in your system for the source of the problem. Gsync is pretty much flawless, sli is a bit spotty depending on the usage, so dont blame gsync+sli, blame sli or something else in your system

Yes yes, looks like user error and it was a combination of things.
My RAM and CPU overlocks weren't stable.
Also, my GPU wasn't idling properly, turned out i had a crypto miner malware in the background?......
A full fresh reinstall of windows worked perfectly.
My apologies for the hysteria.
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