4 minutes ago, funkyj4ever said:

you have an nvidia card so it should be possible to disable it in the nvidia software @JYW

Yeah, I've looked in the Nvidia Control Panel and the Nvidia App and can't find any options for the resizeable bar.  I read references above to it being done in the BIOS?    I know Nvidia Inspector can do it but I won't use that software and I was burned badly by it in the past.

EDIT:  I just checked the System Information tab on the Nvidia Control Bar and it says "Resizeable Bar - NO", so I guess that means I already have it off, and already reaping the benefits.  🙂

I must admit, I have zero complaints about 2024 for my system performance these days.  Considering my modest GPU, I get what I feel is fantasic performance. It's only occassional nag prompts that can be annoying.

Edited May 6May 6 by JYW

On my Asus card, Bios shows the Rebar on/off spot on the main bios page right at the top of the screen.

edit: they call it resize bar.

 

Edited May 6May 6 by Fielder

We have been down this road many times before.
Early testing with the sim showed a very slightly lower performance in MSFS with it set to on, while some other titles benefited slightly.

Basically it doesn't make much difference.  Whichever way you set it and whatever PC spec you have, if you set it in a way that might give you that extra little bit of performance, you are not going to suddenly jump up and say 'Wow!'.
There are dozens of things that can affect performance far more than messing with REBAR, as we all know.  

With no significant difference either way I would say it is not worth worrying about it in MSFS.
If you have a few games on the same PC that do benefit with it on (I think Cyberpunk 2077 was one that was tested as better, from 71 to 72 fps! ), then set it to on and leave it to help them.  It won't affect MSFS much.

There is some commentary on the internet that REBAR on can cause stuttering due to increased VRAM usage (very dependent on GPU of course).
Probably wasted too much breath on it already for something of such low significance in MSFS, and in general.  

 

Edited May 6May 6 by bobcat999

On 5/5/2026 at 10:18 PM, AnkH said:

My 4090 with the 9800X3D actually runs BETTER with rBAR on. So you have to test this on your very specific hardware combo, seems this is not a simple yes or no for everybody...

True. I have 3090 and no issues with rBar ON. 24GB of VRAM rules. Nvidia's policy to push low VRAM on anything that doesn't end with 90, is just a lame move to make you throw more money. I mean 4080 or 5080, look at the prices, but those cards have 16gb of VRAM. 

14 minutes ago, bobcat999 said:

We have been down this road many times before.
Early testing with the sim showed a very slightly lower performance in MSFS with it set to on, while some other titles benefited slightly.

Basically it doesn't make much difference.  Whichever way you set it and whatever PC spec you have, if you set it in a way that might give you that extra little bit of performance, you are not going to suddenly jump up and say 'Wow!'.
There are dozens of things that can affect performance far more than messing with REBAR, as we all know.  

With no significant difference either way I would say it is not worth worrying about it in MSFS.
If you have a few games on the same PC that do benefit with it on (I think Cyberpunk 2077 was one that was tested as better, from 71 to 72 fps! ), then set it to on and leave it to help them.  It won't affect MSFS much.

There is some commentary on the internet that REBAR on can cause stuttering due to increased VRAM usage (very dependent on GPU of course).
Probably wasted too much breath on it already for something of such low significance in MSFS, and in general.  

 

I'm sorry i have to disagree a little here. There is a difference if we are talking about MSFS 2020 or MSFS2024

In context of my pc primarily built for the sim only ( I have three consoles for every other game i could ever want to play). I have been able to test the veracity of the claims when people were starting to mention turning Rebar/ Resize bar off. 

For MS2020 you are very much correct in saying that there is not much of a difference when its off or on and the recommendation of just leaving it on was the default generally accepted position which i did for a long time. 

For MSFS2024 however. Turning it off freed up for me approximately 600 to 800mb of VRAM. Moving me from consistently avoiding flying into airports like LSZH/KATL/JFK/EGLL as my system would blow past the VRAM budget when REBAR was on to Comfortably flying into said airports although still living on the edge VRAM wise but no longer stuttering and the resource warning only momentarily occurs instead of guaranteed and continuously stuttering.

Could i have left rebar on and lowered my textures to high to save vram and get maybe +1 or 2 fps sure... but on balance the better bet in my opinion is to turn it off and be able to move your texture setting back to ultra lock  your frames and turn on framegen.

For MSFS2024 there is very much a difference in terms of VRAM savings when it is turned off. I personally was resistant to the idea until i tried it back during the SU2 or 3 beta. Left rebar off ever since as i have not returned to MSFS2020. 

 

28 minutes ago, Pe11e said:

True. I have 3090 and no issues with rBar ON. 24GB of VRAM rules. Nvidia's policy to push low VRAM on anything that doesn't end with 90, is just a lame move to make you throw more money. I mean 4080 or 5080, look at the prices, but those cards have 16gb of VRAM. 

For those who have a card with adequate VRAM for your resolutions .. yes leaving it on may be the better move. Turning it off was specifically to provide a little easement for those people who bump up to the VRAM limits in the sim. So if your GPU has well over 16GB then this recommendation was not for you guys. The discussion about this solution on the MSFS forums originated from the chats about the VRAM limits problem and this was a temp fix for VRAM only. Nothing else. 

Edited May 6May 6 by Maxis

18 hours ago, KL Oo said:

 

I get far smoother FPS and a decrease in both GPU and main thread timing when I have re-bar ON. Thats with a 5090 where VRAM isn't an issue.

Yep, this is the equivalent of saying “I made it up the snowy hill just fine, but I was using chains on my tires”.

5 hours ago, Bdub22 said:

Yep, this is the equivalent of saying “I made it up the snowy hill just fine, but I was using chains on my tires”.

Not quite - I'm simply pointing out that for me, rebar on helps things.........

Also, powering 3 4k monitors means that whilst it may be a snowy hill, its still a pretty steep one.

10 hours ago, Maxis said:

I'm sorry i have to disagree a little here...

Please don't apologise for disagreeing.    You have personal experience to back it up.  It seems widely accepted that having it on can use more VRAM.

I checked mine last night just out of interest.  Mine is off and I have no performance issues, or undue stuttering.  So off it stays!

12 hours ago, bobcat999 said:

There is some commentary on the internet that REBAR on can cause stuttering due to increased VRAM usage (very dependent on GPU of course).

I assume that would only be the case when a user is approaching the VRAM limit on their GPU. I can get close to the 12GB VRAM limit on my RTX 4070 Super, so it will be worth checking to see whether I have this enabled in the BIOS. I do not have a problem with framerates anywhere, and that is without using any of those frame generation utilities.

Edited May 7May 7 by Christopher Low

Using a 5080 here. Flying exclusively in VR, I see a noticeable improvement with Rebar OFF.  Do it right through the Nvidia Inspector.  Couldn't be eaiser.

Why did I disable R-Size BAR support in the BIOS?

With my new configuration (AMD Ryzen 7 9800X3D - MSI PRO B850-S WIFI6E - 64GB RAM - MSI GeForce RTX 5080 16GB) and MSFS 2024 SU4, the message “VRAM overflow” appeared (a problem I never encountered with MSFS 2020 + Intel 12700 + 64GB RAM + RTX 3090 24GB).

On the verge of crashing at any moment, I checked the Task Manager and found the following:

• With MSFS 2024 + an MSFS 2024 aircraft + an MSFS 2024 airport + an empty Community folder, the amount of VRAM used was between 10 and 11 GB.

 

• With MSFS 2024 + A320 Fenix + FSTL + GSX + graphically demanding airports (EDDF Aerosoft, EGLL Inibuilds, etc), the amount of VRAM used was between 15.3 and 15.6 GB (Dangerous state => crash imminent).

And in the second case, of course, the “VRAM overflow” message appeared (NB: always on the ground, never in flight).

So, after investigating the problem from every angle, the only solution I found (inspired in part by the MSFS forum) was to disable R-Size BAR Support in the BIOS. By doing this, I solved the problem; I never again received the “VRAM overflow” message, as the VRAM usage dropped below approximately 13 GB in all cases. It’s a fact.

I didn’t investigate any potential side effects because, with my hardware configuration and settings (40 FPS max + everything on ULTRA except “Texture Resolution,” which is on High) and MSFS_AutoFps, MSFS 2024 runs perfectly.

But what applies to my configuration doesn't constitute a universal law.

Edited May 7May 7 by Area

I kept hitting the VRAM Limit Warning in MSFS 2024 at airports like Manchester (EGCC), so I tried turning off Re-size BAR. Since then, the warnings are gone and the sim is stable.

I've personally not noticed any difference on my system with it on or off.

On 5/7/2026 at 9:01 AM, FakeWayne said:

Using a 5080 here. Flying exclusively in VR, I see a noticeable improvement with Rebar OFF.  Do it right through the Nvidia Inspector.  Couldn't be eaiser.

Same happens to me at VR with a 5070TI