On 7/24/2025 at 12:54 PM, MrFuzzy said:

Framerate has nothing to do with VRAM usage. DLSS can help instead.

Yeah I get that. I need to figure out why I'm vramming out in 4K.  That shouldn't happen.  It should be high, but not 15gb high.

14 minutes ago, Jeff Nielsen said:

Yeah I get that. I need to figure out why I'm vramming out in 4K.  That shouldn't happen.  It should be high, but not 15gb high.

You might rethink 4K and use some other tech to mimic 4K as able.  3440x1440 w/ those techs is fabulous.  I rarely see more than 13.5Gb of VRAM in use here and that is w/ TLOD 150-200 on the ground on up to 400 on high, all settings on Ultra in MSFS 2024, and in demanding aircraft and scenery.  I use a fabulous registry hack which enables a certain kind of sharpening in NVCP that costs nothing GPU or VRAM wise.  In fact, my complaint is the opposite of yours:  I want MORE VRAM to be used, but instead we now see more system RAM in use than a few months ago, by roughly equal amounts.  I think I've lost some smoothness because of that 'optimization' for lesser VRAM amounts.

Edited July 25, 2025Jul 25 by Noel

6 minutes ago, Noel said:

You might rethink 4K and use some other tech to mimic 4K as able.  3440x1440 w/ those techs is fabulous.  I rarely see more than 13.5Gb of VRAM in use here and that is w/ TLOD 150-200 on the ground on up to 400 on high, all settings on Ultra in MSFS 2024, and in demanding aircraft and scenery.  I use a fabulous registry hack which enables a certain kind of sharpening in NVCP that costs nothing GPU or VRAM wise.  In fact, my complaint is the opposite of yours:  I want MORE VRAM to be used, but instead we now see more system RAM in use than a few months ago, by roughly equal amounts.  I think I've lost some smoothness because of that 'optimization' for lesser VRAM amounts.

Yeah, I just had my friend on his 4070ti super switch to 4K with high FS settings in the ini 350 and only hit 10-11gbs vram usage.  I hit 12 in the default vision jet in 4K with most settings on medium.

I wonder if I have a bad card?

4 minutes ago, Jeff Nielsen said:

Yeah, I just had my friend on his 4070ti super switch to 4K with high FS settings in the ini 350 and only hit 10-11gbs vram usage.  I hit 12 in the default vision jet in 4K with most settings on medium.

I wonder if I have a bad card?

I don't know Jeff but I seriously doubt it.  If there is defective hardware it's not going to work at all most likely, at least that is my guess.  Are you using SU2 or are in the beta?  What is your TLOD at, and if you're using TAA what is Render Scale at?

Edited July 25, 2025Jul 25 by Noel

Just now, Noel said:

I don't know Jeff but I seriously doubt it.  If there is defective hardware it's not going to work at all most likely, at least that is my guess.  Are you using SU2 or are in the beta?

I'm on SU2

Try the SU3 beta and see if that helps. They made a lot of changes. 

15 hours ago, Jeff Nielsen said:

Yeah I get that. I need to figure out why I'm vramming out in 4K.   

Because the sim is far from optimized and Asobo recommended specs are moot.

I think I finally may have got it dialed in.  KRDU-KSFO (5.5 hrs) 4K at 60 FPS steady with no stutters at 49% gpu usage with 13gbs vram steady.  High FS settings, a couple medium, 1 or 2 on ultra, where it doesn't make any difference.   The FPS you see in the pic is because I'm not focused on FS for the screenie.

The proof will be when get low and land.  If it holds, we're gold.

Would still love to see the vram at around 10 or lower.  Will try the 350 tomorrow and see how it goes.  Hopefully MS can save us a few more gigs of vram in SU3.

 

 

Edited July 27, 2025Jul 27 by Jeff Nielsen

1 hour ago, Jeff Nielsen said:

I think I finally may have got it dialed in.  KRDU-KSFO (5.5 hrs) 4K at 60 FPS steady with no stutters at 49% gpu usage with 13gbs vram steady.  High FS settings, a couple medium, 1 or 2 on ultra, where it doesn't make any difference.   The FPS you see in the pic is because I'm not focused on FS for the screenie.

The proof will be when get low and land.  If it holds, we're gold.

Would still love to see the vram at around 10 or lower.  Will try the 350 tomorrow and see how it goes.  Hopefully MS can save us a few more gigs of vram in SU3.

How was it when you landed?

Care to share your settings?

Thanks!

36 minutes ago, MrFuzzy said:

How was it when you landed?

Care to share your settings?

Thanks!

The landing was a little bit of a mix.  Mostly good as the vram itself never really spiked above 14. There was a weird lag spike somewhere near the KOAK area that I've never seen before. No idea what it was. It caused some stutters. After landing when looking east the GPU utilization really spiked to near max.  It instantly went away when I looked away from it.  

The sim settings were a mix of medium, high. TLOD at 100, texture res medium.  FG on.  Those are the main ones. There were 1 or 2 stutters I think from objects popping in right over KSFO on the arrival at about 10K feet.

CP settings were only vsync enabled on my 60hz monitor.  

I need to do some more testing, but it's not my hardware. 

I think the aggressive LOD might play a part along with the MSFS 2024 Vram issues which are all known issues to be addressed in SU3 and SU4.

I'm not sure how much vram ASOBO is trying to save (I think they gave an idea in a past Q&A, but can't remember right off), but it needs quite a bit of savings, otherwise we're all going to be looking at having to get at least 24 gig cards to sim with payware addons.  Right now, it's right on the edge, IMO.  We'll know here in a few days, I guess.

3 hours ago, Jeff Nielsen said:

KRDU-KSFO (5.5 hrs) 4K at 60 FPS

Would still love to see the vram at around 10 or lower.  

 

You're running at 4K at 60 FPS, and you hope that the VRAM usage will be lower than 10 GB usage.  That's a daunting task, for something with visuals as good as MSFS 2024, where the viewing distance can extend for over 100 miles away (it's not like first person shooters like Counter Strike, where the viewing distance is probably under 500 meters). To be honest, anything you run at 4K at 60 FPS for visuals as good as MSFS 2024 with a viewing distance that can extend for 100 miles away, is probably going to just eat VRAM, there is no way around it.  Probably the only way to achieve 4K at 60 FPS is to turn down your other graphics settings, which it seems you have already done.

Edited July 27, 2025Jul 27 by abrams_tank

34 minutes ago, Jeff Nielsen said:

I need to do some more testing, but it's not my hardware. 

I agree... it's pointless to break our heads on it.

Personally, I have intermittent stuttering even on cruise with less than 70% VRAM utilized, 30% CPU (load evenly spread), 45% GPU.

It doesn't make sense, and the sad thing is that until SU2 everything was smooth 99% of the time.

On 7/25/2025 at 9:37 PM, Noel said:

I use a fabulous registry hack which enables a certain kind of sharpening in NVCP that costs nothing GPU or VRAM wise.

Is it this one?

https://m.youtube.com/watch?v=oeeA_Sa5-58

10 hours ago, xsever said:

Is it this one?

https://m.youtube.com/watch?v=oeeA_Sa5-58

I didn't watch the whole video but yes that looks like it.

Just playing around at 2K.  The ini no cabin at EDDF eats about 13.6 gb vram.  Add the cabin it costs about another gb (not doable).  My drivers and dlss are all current with 24h2.

Outside view the vram jumps to 14.6 with no cabin in the 350.

On my friend's system with his 4070ti super in the 350 no cabin he sees about 10gb vram at EDDF.  win 23h2 and driver version 576.4. dlss 310.1

4K is not doable, period.  2K is still running on the edge, IMO.

The FNX 321 hits about the same on vram in 2K at EDDF.  For comparison at KJAC the vram is about 12gb.

 

Edited July 27, 2025Jul 27 by Jeff Nielsen