RTX2080TI stutter

[BrainFart0]

I've installed the RTX 2080 TI coming from a GTX1080TI and the new card is going realy smooth on same settings that I used on the 1080TI but then it drops frames and you're starting to see stutters. (see attachment)

 

The reason it drops is because it hits the power limit all the time, my overclocked 1080TI never reaches the power limit. Bad RTX card design?

 

I've opened a ticket at MSI:

 

I have the MSI RTX 2080 Ti VENTUS 11G OC, and it's constantly hitting the power limit as you can see in the attachment.

Framerate drops significally when the power limit is reached, resulting in short heavy stutters.

 

Setting power limit to max (111%) MSI Afterburner has no impact.

Problem is both present on Win7 and Win10.

Is this maybe fixable by a new bios with higher power limit?

 

MSI answer:

 

This is the BIOS setting of the video card, the power can only reach the current height.

The power limit is designed according to the graphics card performance and safety. For your graphics card, we do not suggest to increase the power limit reluctantly, for this may cause the damage to the hardware of your card and decrease the service life.

 

Anyone else having this problem with stutters when it hits the power limit?

 

Thnx!

[Jumbik]

Hitting a power limit should not cause stutters but rather cap your frames at certain point. I'm using different power limits all the time and it only changes the total Watts allowed for the GPU. Hitting the power limit is nothing wrong or bad, it only means that the GPU is utilized to 100% which is OK. What could cause problems is Thermal limit (but your temperatures look ok).

 

It's not clear what is happening from the image you have provided. But I will guess that the GPU is trying to change into a different (higher) power state but fails to do so due to some limitations. You have only two states of the power limit there which is strange, graph with percentage would be better I suppose.

 

Do you use some FPS limiter in game? For example Vsync or FPS target via drivers, if not try it.

 

 

If you want to measure how much power the GPU draws, try to install GPU-Z and check the logs.

 

 

Stuttering usually comes from other sources though, power limit would only limit your max fps. Maybe your CPU is throttling?

[BrainFart0]

Thanks for the reply Jumbik,

 

It happens when looking down at the trees, because thats the moment when it needs more power. Still weird that I never see any power limit with my 1080TI.

 

GPU-Z says the Perf reason = PWR (alot!)

I have locked the CPU speed, no throttling. When resetting mainboard BIOS to defaults the issue still remains.

 

I forgot to mention; this is happening in VR with the HTC Vive (so no Vsync), ASW kicks in when the framerate drops.

 

I've done some googling on this and it looks like more and more people are beginning to notice the power limit as problem. Maybe thats the reason why some cards have higher watt ratings, mine is 260watt (2x8 pci-e power) and some cards up to 370watt (2x8 + 1x6 pci-e power).

 

Can you explain why an FPS limiter would help?

 

Thanks!

[toutenglisse]

Your picture doesn't show the fps graph. So only supposition can be made.

 

If your fps graph is "2 stage" like your gpu usage, between 45 and 90 fps than everything is normal - zero issue. (assuming this is VR, supposition...)

 

If not it will probably lack detailed CPU graph...

[toutenglisse]

So this is VR, so you don't have issue.

 

Your gpu can't go beyond 100% so when it's the case everything is half cut (fps go down to 45 fps and usage go down to above 50% - when usage can go Under 50 % than everything go up twice and fps are at 90 and usage a hair Under 100%).

 

Solution : decrease Level Of Detail (to keep 90fps with Under 100% gpu usage) or accept 45 fps + ASW and take benefit of it by increasing LOD as much as you can keep 45fps.

[Jumbik]

Yes as said above, you are most probably experiencing FPS drops.

 

The time frames are much higher and it may look like stuttering.

 

But if this is happening at the same level of details as you had with your 1080ti, then something is wrong.

[toutenglisse]

Addition : if you want to analyse power limit, you also have to show "gpu core frequency" graph - if power limit = 1 correspond to a decrease of your gpu frequency than power limit is an issue but if there is no decrease at the same time than power limit is reached, than don't care of it.

 

Your issue again seems to be too high LOD to keep 90 fps - in your case (HTC vive) you have to adjust LOD in DCS but also in steam VR : if you have not touched steam VR settings you are probably in auto-supersampling mode (I've found in other games that auto-SS is smart - but you don't know the number of it). For steam VR you should choose manual SS setting (100% in steam VR and set SS in DCS with trials and errors ?) and untick "interleaved reprojection" (keep "asynchronous reprojection" ticked)

 

With your previous 1080Ti and same settings you probably were at 45fps+asw all the time - more stable so less "stutters" you maybe experience because jumping 45 to 90 fps back and forth.

[BrainFart0]

Sounds logic, it's either 45+ASW or 90FPS. Looks like ASW kickin is pretty abrupt, it stutters heavy then smooth in ASW. So it's just that switching moment of ASW.

 

When I compare it to my 1080TI you can see that ASW is always on a little bit (like Toutenglisse said), that makes it a little bit more blurry. So that explains alot.

 

I tried all the setting combination with Steam but no bueno, lowering my settings is not what I had in mind with this card. So the card is powerfull enough to produce 90FPS but not powerfull enough to keep 90fps in DCS.

 

Not realy what I expected, so i'm returning the card and keeping my watercooled 1080ti.

 

Thanks for the help guys.

[toutenglisse]

:smilewink:

 

just keep in mind that with ED's work on vulkan and other optimisation, the 2080ti may "soon" be the card that can run DCS vr at 90fps with good enough LOD….

 

But actually, compared with 1080Ti, this card can only run 45fps+asw same stability but with higher LOD, and that makes it too much expensive if budget knows a limit.

[BrainFart0]

:smilewink:

 

just keep in mind that with ED's work on vulkan and other optimisation, the 2080ti may "soon" be the card that can run DCS vr at 90fps with good enough LOD….

 

But actually, compared with 1080Ti, this card can only run 45fps+asw same stability but with higher LOD, and that makes it too much expensive if budget knows a limit.

 

 

Yep! This was my budget limit :) Looking forward to Vulkan's preformance!

[BitMaster]

If Vulkan with DCS will support mGPU I will happily buy your used 1080ti's.

 

It could well be that Vulkan and mGPU will stirr things up which combo makes most sense, with budget in mind...IF, big IF DCS's Vulkan can use mGPU and down the road also Oculus API and others.

[boscoh]

Setting power limit to max (111%) MSI Afterburner has no impact.

Problem is both present on Win7 and Win10.

Is this maybe fixable by a new bios with higher power limit?

 

MSI answer:

 

This is the BIOS setting of the video card, the power can only reach the current height.

The power limit is designed according to the graphics card performance and safety. For your graphics card, we do not suggest to increase the power limit reluctantly, for this may cause the damage to the hardware of your card and decrease the service life.

 

Anyone else having this problem with stutters when it hits the power limit?

 

Thnx!

 

Yep, the card needs to be flashed with a new BIOS to go over a certain power setting. You shouldn't be having issues though at the stock clock, and I wouldn't think you'd have issues OC'd to the level the Founders Edition cards are. Those cards can't be flashed to unlock more power.

 

Were you overclocked? If so, to what settings?

[hansangb]

:smilewink:

 

just keep in mind that with ED's work on vulkan and other optimisation, the 2080ti may "soon" be the card that can run DCS vr at 90fps with good enough LOD….

 

But actually, compared with 1080Ti, this card can only run 45fps+asw same stability but with higher LOD, and that makes it too much expensive if budget knows a limit.

 

 

One can dream