gtx 1080 stuttering?

[mikesaa309]

I have an Octane 3 with a gtx 1080 gpu and a i7 6700k cpu. I'm getting pretty bad performance in games even at 1080p res like my fps will be at above 60 but then I get stutters they only last like half a second if that but they're noticable no matter what I do I can't seem to fix it. Turning on or off vsync makes no difference. Cpu isn't bottle necking the gpu either just don't get what the issue is. Anyone got any ideas?

 

[mikesaa309]

Update and solution: Okay so seems like it's a driver issue with the latest drviers for the gtx 1080. I reverted to driver version 375.63 and now so far seems to provide way much smoother game play. Just thought I'd let people know in case they're having the same issue.

 

[ubuysa]

Update and solution: Okay so seems like it's a driver issue with the latest drviers for the gtx 1080. I reverted to driver version 375.63 and now so far seems to provide way much smoother game play. Just thought I'd let people know in case they're having the same issue.

Many thanks for posting the solution, it's important that people do that because it does help others. +rep deserved and given.

 

[Scott]

I was going to suggest the driver. The issue is with G-Sync rather than V-Sync. Their latest drivers (14/12) and the previous ones (04/12 iirc) have the same issue.

I wrote about it here... https://www.pcspecialist.co.uk/forums/showthread.php?52069-Octane-Tips-Tricks-Info-and-Experiences

As soon as I get a good working driver I'll update, I'm on the Nvidia forum and it's a real issue across the range.

 

[mikesaa309]

Was your post that gave me the idea to try and see if the drivers were the cause. Though your post didn't specify what problems you were having but thought it would be worth a shot. Did seem to be a gsync issue like you said as when i turned it off seemed to run smoother but screen tearing was pretty bad even with vsync on so was hard to tell for sure but seemed to stutter less.

 

[Scott]

I wasn't really looking for screen tearing etc so that may well have still been happening, as soon as I install a new set of drivers I always run firestrike to see what I get, my scores were crushed until I turned G-Sync off so I just uninstalled at that stage

 

[mikesaa309]

What software did you use to undervolt the CPU? CPU temps reached a max of 99 degrees in gta 5 according to HWinfo64. Also by how much should I undervolt?

 

[Oussebon]

I wonder if PCS should start offering an undervolting service.

 

[mikesaa309]

Yeah agreed would be better just to get laptops or desktops with the cooling set properly especially laptops where we can't upgrade the cooling system or water cool them. I read the post The_scotster made and used the pre-installed software to undervolt. I used intel burn test to see how hot it got only got to 79c at most but not sure if it'll get hotter in game so we'll see. Have only undervolted to -150 so might still have some room to undervolt. What kinda things show unstability will screen start flickering? Would have thought that would happen with gpu but not cpu.

 

[mikesaa309]

fgs so just playing gta 5 temps seem much better since undervolting but then all of a sudden fps drops to 17 fps and isn't really going any higher for no reason. CPU isn't even maxed out so not like undervolt is effecting it. Even tried going back to normal voltage and still low fps.

 

[Scott]

Yeah agreed would be better just to get laptops or desktops with the cooling set properly especially laptops where we can't upgrade the cooling system or water cool them. I read the post The_scotster made and used the pre-installed software to undervolt. I used intel burn test to see how hot it got only got to 79c at most but not sure if it'll get hotter in game so we'll see. Have only undervolted to -150 so might still have some room to undervolt. What kinda things show unstability will screen start flickering? Would have thought that would happen with gpu but not cpu.

Instability normally causes the PC to reboot due to crashing, sometimes if it's only a minor hiccup the software will crash. Are you still at stock frequency? If so, a -200mv should be sustainable. Don't just jump straight to that level though, try -160, then -170, etc to ensure you don't go too far too quickly.

GTA V is my bench for cooling, it's just bonkers when you turn up some of the settings how hot things will get. I can't remember the setting that caused the CPU spiking for me but I think it was super sampling or some sort of AA. The thing is, there's no need for those settings to be maxed during gameplay so it's best to leave the default "high/extreme" profile set as it is. For benching... max it all though

 

[mikesaa309]

seems like the cpu just gives up after awhile. I tried beam NG drive too and was only getting 17-20 fps in that game. I rebooted and it's fine but as soon as I undervolt seems like after a while of playing fps just drops and it won't recover until I reboot the system

 

[Scott]

That's more than likely down to the GPU rather than the CPU. Does it not do this while running stock clock speed and voltage? If it doesn't that's very strange. What you describe is what happens when I take the power lead out. Strangely, when playing FSX, if I take the power lead out... run the game and then plug it in, it won't recover until I reboot the laptop.

 

[mikesaa309]

Running stock everything except undervolting cpu. I've changed it to 140 undervolt so far no problems so I'm just gonna keep decreasing it by 10mv each time and play gta 5 for a few mins and see if there are any issues. At 140mv unvolt the highest temp I've got it 87c with an average temp of 80c do you reckon that is reasonable?

 

[mikesaa309]

I tried -150mv and just had a black screen and wouldn't do anything had to hold power button down to reboot it. I have overclocked the monitor to 100hz do you reckon that isn't helping? Might just stick at -130mv underclock think highest I got with that was 88c or is that still too hot?

 

[Scott]

I was more concerned with your previous post regarding the FPS drop. Do you believe the FPS drop is down to the undervolt?

You should be able to hit around -200mv with the stock core speed. I would personally keep going in -10mv increments until I noticed instability, I would then pull it back 10mv and settle at that. If you hit -200mv just stick with that, that's more than enough to keep things cool

Edit: Just saw your last post, that's quite unlucky to be honest. You should be able to go a fair bit further than that as most overclocks run at around -150mv. I would try -140 again, put it fully through its paces.

BTW, what caused the black screen. Was it immediately after you input the undervolt or was it while gaming? Your PC will black out if the CPU goes above 100°C.

 

[mikesaa309]

blacked out while gaming. Rebooted it and put it back to a -130mv undervolt and played gta 5 again and it blacked screened once again just nothing worked to get it to come back on except holding down the power button and rebooting it.

 

[Scott]

blacked out while gaming. Rebooted it and put it back to a -130mv undervolt and played gta 5 again and it blacked screened once again just nothing worked to get it to come back on except holding down the power button and rebooting it.

I would check your temps to be honest. That sounds like it's overheating. Can you play in window mode while monitoring the temps?

 

[mikesaa309]

didn't have any over heating issues before undervolting nor any black screening. I put my screen back to stock refresh rate but still black screened with a 150mv undervolt. Gonna play gta 5 with stock voltage and overclocked screen and see if it runs without issues but got to 99c max temps which is why I wanna undervolt.

 

[mikesaa309]

okay then so with no undervolt so far i have no issues but cpu temp reached a max of 98c what programs are there that'll let me see temps as a graph? I wanna know if this was just a temp spike or a prolonged temp.

Update: Used MSI afterburner to monitor temps seems like it's up in the 90's quite a bit.