Agree, SU4 has massive improvements in this regard. 

19 hours ago, Krakin said:

Check out SU4 beta. The VRAM issue is pretty much solved now

I got a frozen msfs with VRAM notification just last night. Trick was to wait a couple minutes after spawning to settle things a bit

On 10/27/2025 at 10:12 PM, Krakin said:

Check out SU4 beta. The VRAM issue is pretty much solved now

this is not true.  you still get a number of airports with stupidly high texture sizes what just wallop you unless you have a 16+ gfx card.  Orbx's australians ones for example are awful,  with Pyreegue EGPH being a close second.

Being able to slap a "hd pbr " textures tag line on products has always been to a thing to generate sales, but doesnt help with proformance.  eye candy makes sales and thats all they care about.

My flight at Pyreegue EGPH Edinburgh v2 last night in the PMDG 777F did not suffer any problems at all with 12GB VRAM.

2k vs. 4k DOES make a lot of difference for VRAM consumption. With my 16GB card I'm staying away from 4k.

i was trying to find the link to the tutorial to compress KTX2 files to 2K.  similar to texture optimser -- similar to this 

 

https://izn-flightsim.s3.amazonaws.com/textureoptimizer.html

 

 

 

Edited February 18Feb 18 by fluffyflops

7 hours ago, fluffyflops said:

this is not true.  you still get a number of airports with stupidly high texture sizes what just wallop you unless you have a 16+ gfx card.  Orbx's australians ones for example are awful,  with Pyreegue EGPH being a close second.

Being able to slap a "hd pbr " textures tag line on products has always been to a thing to generate sales, but doesnt help with proformance.  eye candy makes sales and thats all they care about.

You're not contradicting what I said because this is clearly a third party dev issue. Even iniBuilds have done a much better job with optimization lately so it's up to Orbx to get in gear.

2 hours ago, G-YMML1 said:

2k vs. 4k DOES make a lot of difference for VRAM consumption. With my 16GB card I'm staying away from 4k.

With my 3080 ti 12GB card, it's absolutely fine at 4k and at 144hz as well.
Most of the time it uses around 10 to 11GB, what's the point of all that RAM,
if it doesn't get used?
Here is an image for those who prefer to fly a frame rate counter over a 
flight simulator:

The frame rate is locked in the Nvidia Control Panel.
It keeps temperatures down and stops the simulator from wasting resources
chasing frame rates.
That's been a valid way of optimising MS flight simulator hardware resource use
for, at the very least, 24 years.

Edited February 18Feb 18 by Reader

2 hours ago, Krakin said:

You're not contradicting what I said because this is clearly a third party dev issue. Even iniBuilds have done a much better job with optimization lately so it's up to Orbx to get in gear.

oh yeah inibuilds gatwick is very well optimised but both orbx YBBN and YPPH  are not well optimised at all. 

 

Lowi from ini.  same thing again its not the best either.  I just wish I knew a way to compress the files 

51 minutes ago, fluffyflops said:

YBBN and YPPH  are not well optimised at all.

Why do you say that?  MSFS 2024 is KTX2 and/or BC7 compression which is about as good as it gets in current gaming industry standards.. Most 3rd party scenery providers will go thru some level of optimization in Blender or 3DSMax … but not all, optimization does take time and money.. But I am curious on how you are coming to the conclusion it’s not well optimized? Using more VRAM isn’t a flag of poor optimization, nor is low FPS … lots of other factors to look at.. I’m not disagreeing or agreeing with you, just like to know how you came to that conclusion, are you looking at files in the packages folder for those airports?

1 hour ago, Reader said:

Most of the time it uses around 10 to 11GB, what's the point of all that RAM,

MSFS 2024 will use more if you have more, you don’t have more … look at your RAM values … you’re swapping in/out.

I can and do sometimes use more than 32GB of VRAM in MSFS 2024 hence a stutter or two … using VRAM is not a bad thing, it’s much faster access to graphics resources, the more graphics resources (textures and the like) you copy over to VRAM the better the performance.  One of the advantages to nVidia RTX 6000 with 96GB RAM … what you get out of that much VRAM is not a higher FPS but much more consistent FPS.

Currently VRAM, RAM, HDD, SDD, M.2 memory grab for AI processing has made the cost madness even worse … but I’m confident that will eventually return to normal once the AI bubble does burst (and it will once the financial models don’t work to expectations).

1 hour ago, SayAgain said:

MSFS 2024 will use more if you have more, you don’t have more etc, etc

I am afraid that my remark :
"what's the point of all that RAM, if it doesn't get used?
was rhetorical, but thanks for the lecture anyway.

7 hours ago, SayAgain said:

MSFS 2024 is KTX2 and/or BC7 compression which is about as good as it gets in current gaming industry standards.

As I understand it, in 2024 it's important for airports to adhere to the new LOD standards for the best performance, but I have no idea if the airports mentioned are designed with the new LOD system in mind.

6 hours ago, Reader said:

I am afraid that my remark :
"what's the point of all that RAM, if it doesn't get used?
was rhetorical, but thanks for the lecture anyway.

A typical response from you, where someone puts facts to you that you can't come back on.

He wasn't lecturing you, he was responding with knowledge to your loose, anecdotal claims.

4 hours ago, JYW said:

A typical response from you, where someone puts facts to you that you can't come back on.

He wasn't lecturing you, he was responding with knowledge to your loose, anecdotal claims.

Facts have nothing to do with it and there is no dispute.
It's not a claim, it is an off-the-cuff remark that in his case has been misinterpreted as a question
that needed an answer and a question and in yours, some kind of challenge.
I am quite sure that he is capable of formulating his own replies without your help.
Please stop trying to create conflict where there is none, something that is also "typical" in these forums.

15 hours ago, Funky D said:

2024 it's important for airports to adhere to the new LOD standards for the best performance

My understanding also and I think if these vendors want to sell to XBOX/PS5 users, they have to implement multiple LODs.