Poor Performance with NVIDIA 4090

[Maxis 2,011]

25 minutes ago, ryanbatc said:

I do agree here.  And some people are commenting about 1080P.  He's not running 1080p lol.  what is that res anyway....3840x1080 - double HD or something.  Probably like somewhere between 1440p and 4k.  

It's a hefty rig for sure.  Something is amiss though.

 

Still not 4k .. a 3090ti would have been more than enough and probably a better balance that would have been in harmony with  the rest of the components for his system. But that is just my opinion alone..

If i am buying a GPU that requires 4 connectors and a certain level of wattage then please actually have the PSU in place before dropping the new card in.

At the moment i would take the card out put the old one back in and order a 1000 watt PSU that has the new connector (ATX 3.0 - NATIVE PCIE 5 -16 pin connector) that avoids the dongle. Once that is installed .. DDU the system to remove all traces of the previous card and start from there.

 

Edited October 17, 2022 by Maxis

[Bdub22 1,738]

I can almost certainly say that it's mostly a power supply issue. Thats a giant card that needs ample power to give it what it needs. 

[Republic3D 1,240]

It's not the PSU. 

3 x 150W PCI-E cables from an 850W PSU is enough for the FE version (Original Nvidia card). You're correct in saying that it only needs the 4th if you're going to overclock.

If your GPU is from a board partner it might need some more juice. 

You're going from an AMD GPU to an Nvidia GPU, the issue is likely with drivers or MSFS.

If you're seeing this issue in other applications than MSFS, it's likely a driver thing. Use DDU to clean out those old drivers and install fresh one.
If you're only having this issue in MSFS, try deleting your UserCfg dot opt file and let it repopulate. 

Download a few benchmarks and run them to figure out if it's MSFS or something else. 3DMark is a good one that you can find on Steam.

You'll figure it out and enjoy your new card in no time. 👍

Edited October 17, 2022 by Republic3D

[seamaster55 77]

I'd set everything back to default in the graphics settings, and go from there, also the same in the nvidia control panel, set that back to its base settings, and then change things incrementally.

You may find out the particular graphics setting that is the problem. (if it isn't someat to do with your hardware)😅

[ryanbatc 13,233]

Is it something more obvious like enabling DX12 and DLSS?  Or does msfs not support that new 3.0 yet?

[yanfeng12342000 132]

Mark. Very curious about the final results.

[Bionor 44]

DLSS3 is only available in the SU11 beta I think(DLSS3 is called nVidia DLSS frame generation), so if you have not opted inn for the beta, I strongly suggest you do so. I'm running 4K/Ultra settings with DLSS3 and it is absolutely stunning. From 4K medium settings and 70fps(3080 Ti)---> to 4k ultra and now seeing 140+ fps is quite something.

Edited October 17, 2022 by Bionor

[regis9 4,119]

For performance to drop like this I’m guessing  it needs to be something in the sim setup or drivers overall, I can’t imagine it has to do with pairing with a (slightly) older CPU.  That wouldn’t explain a degradation in performance.

Hopefully someone smarter than me can help the OP figure out the conflict or the adjustment needed.

[turbomax 3,455]

last but not least: exclude MSFS and all related directories (like Community ) from any antivirus app you may have installed.

[David Mills 4,774]

Here's an even more fundamental question: Is your entire computer behaving sluggishly? Or just MSFS?

[Fielder 4,004]

3 hours ago, ryanbatc said:

I do agree here.  And some people are commenting about 1080P.  He's not running 1080p lol.  what is that res anyway....3840x1080 - double HD or something.  Probably like somewhere between 1440p and 4k.  

 

 

It's probably two HD monitors side by side (two 1920 x 1080). I fly exactly like that sometimes and get better fps than the OP (render 100, graphics setting is the Ultra preset, DLSS, Quality. 3070 gpu 5600x cpu. 

But remember his drivers and so forth are the same as he had before dropping in his new gpu. And he had no glaring issue like he does now. Which sort of rules that out. A faulty gpu is unlikely. Sounds like he has enough power connected.

I think that rules almost everything is ruled out! 

So, no help am I, LOL.

 

[ryanbatc 13,233]

8 minutes ago, Fielder said:

It's probably two HD monitors side by side (two 1920 x 1080). I fly exactly like that sometimes and get better fps than the OP (render 100, graphics setting is the Ultra preset, DLSS, Quality. 3070 gpu 5600x cpu. 

But remember his drivers and so forth are the same as he had before dropping in his new gpu. And he had no glaring issue like he does now. Which sort of rules that out. A faulty gpu is unlikely. Sounds like he has enough power connected.

I think that rules almost everything is ruled out! 

So, no help am I, LOL.

 

Well it's helpful too.

Anyway, 

From reading this thread, @elee we think its a possible one, or a combination of these items

1) Faulty PSU

2) Not enough PSU cables connected

3) DLSS 3.0 / DX12 not enabled

4) video driver conflict - use DDU cleaner- https://www.guru3d.com/files-details/display-driver-uninstaller-download.html

5) CPU under loaded - possibly overclock it to allow the GPU do also do more work?

 

[OverTheEDJ 270]

2 hours ago, Bionor said:

From 4K medium settings and 70fps(3080 Ti)---> to 4k ultra and now seeing 140+ fps is quite something.

Great Results, what LOD are you running?

I was only hoping to get locked 60fps running 1440p with Ultra settings by upgrading to a new 4090 and latest Gen CPU, but it sounds like your performance surpasses that...

[G-RFRY 1,765]

The 4090 will work with just three connectors but needs four to get the full performance as explained by Steve here.

  NVIDIA GeForce RTX 4090 Founders Edition Review & Benchmarks: Gaming, Power, & Thermals - YouTube

Skip to 14.54.

Edited October 18, 2022 by G-RFRY

[iFlySimX 774]

Simple answer to this...MSFS is not fully optimized to use newer hardware to it's full potential....Lot's of that old FSX code still there.