Resolution versus Render Scaling

I have a monitor that is 2560x1440. With all the performance problems, the CPU Mainthread runs lower at 1080p than 1440P. So I normally run at 1080p

Now there are two was to accomplish that:

  1. Set the resolution at 1920x1080 with Render Scaling set to 100.

  2. Set the resolution 2650x1440 with Render Scaling at 70 or 80. 70 yields 1792x1008 and 80 yields 2048x1152.

I have tried both way and on my system the performance is pretty much the same.

Anyone notice any difference or have recommendations as to which way they think is better and why.

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Just trust your eye.

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Whatever is your native resolution is what you should go for,

My native resolution is 4K but sometimes I put the slider up to 120,

It all depends on your gpu and cpu headroom I think,

System is
i9 10850k
Rtx 3080
32GB ddr4

How’s the fps?

Steady with 35 on average over the demanding cities I’ve seen it dip to 25, but it’s still smooth with no stutter.

As mention that’s in 4K Ultra settings with both LOD at 200

Regards

but rendering at 120 is no longer 4k.
it’s 20% more than 4k

anyway, nice setup

I think it mainly depends on the resolution of the monitor. I have a 27" with a native resolution of 2560x1440 and when I was playing with a 7-year old GPU, setting MSFS to 1440p with a scale of 80 made a huge difference compared to 100, more than 10-15 fps. The problem is that everything became blurry, especially text in glass cockpits. I suppose I would get the same result with a straightforward 1080p resolution.

So it all depends on native resolution, otherwise you wouldn’t see much of a difference anyway.

What kind of GPU do you have? Probably does not have enough headroom for 1440p.In my case on 1440p ultrawide I reduce some of my settings that take up vram and kept mine at default 100.

I know it’s no longer 4K at 120, it just makes some stuff stand out slot better, mainly in the cockpit.

Kind regards

Yeah that was an ancient GPU with only 4GB of VRAM. It was even below minimum MSFS specs. But it would still do the job as I was averaging 30-35fps most of the time in high settings. The blurry text was worth the performance upgrade.

Now I have a 6800xt running at 1440p with scale 150, which I later changed to 100 because it wouldn’t make that much of a difference in a 27" screen.

Depending on your GPU you can in fact run with render scaling greater than 100 and it not impact frame rate too much.*

I have a 3090 + 1440 monitor and find that render scale 150 makes the GPU work at a proper rate but with minimal impact on frame rate.
(At 200 I do see some frame rate reduction)

The image also looks much nicer. Especially the details within cockpit. (Guages etc)

*Note. There are so many other issues with the game at present that I sometimes see random drops 15fps etc but these will happen whether my render scaling is 50 or 150!

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My monitor is 1920 x 1080 so I run at that with a render scale of 100. However, it seems to look better if I turn the render scaling up a bit. It seems that it improves texture flickering for me, though does cost a few FPS. Not sure if my perception is real or imagined though as it’s difficult to quantify.

I have an RTX 2060 Super 8GB, but when I raise the resolution, it’s not the GPU that has problems, it the CPU Mainthread that struggles. I have an I7-10700 with 16 logical Processors and 64GB of RAM. But FSXX doesn’t adequately make good use of all the processor and good load balancing.

I’m always restrained by the Mainthread.

I have the same card.Mine is hovering between the two but I am limited by GPU almost all the time 10700KF not OC yet 3440x1440.When reducing to 2560x1080 the sim is certainly much smoother. Looking forward to getting a much higher end GPU.3440X1440 is using so much vram.It is going to need more than 8gb vram.
2560x1080


3440x1440

The main issue here vram and processing power on the card. Instead of reducing the resolution down to 2560x1080 my only real solution turn texture resolution from ultra to high in the meantime until this crazy GPU shortage is over.

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For me 8GB seem okay for me since I don’t have the ultrawide screen. I did switch to 2560x1440 resolution and did few test. I’m still limited by the main thread, but my GPU was about 80% and only about 6GB of VRAM in use, but I wasn’t flying in in a big city. But I keep my setting on the low side due to the mainthread issue.

Just flying around home in KVRB. I’m really used to this place, so when testing I normally just test around home.

What airport is that at, I’ll try there and see what I get. Here I’m have a resolution of 2560x1440 and rendering at 100%, but like I said, I’m at my local airport. And with Live Weather.

2560x1440 is certainly less pixels to push
And I did my test at a payware airport KLAS Flytampa in my previous screenshot otherwise the sim breezes through default airports.
Something like a 3080 would definitely allow me to push more frames on 1440p ultrawide.
I’m hoping it doesn’t end up with the vram issue like P3D v5 DX12.
The guys rocking a 3090 or 6900xt must be Lucky.

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I will try KLAS. Don’t recall if i own that one. I’ve bought a lot of airports and scenery from the Marketplace.

I don’t buy from anywhere else and in only thing in my Community Folder is my Navigraph Subscription.

If I don’t already won KLAS, I will get it and see how my frames I get there.

I’m now thinking if I should OC the 10700k might not be worth it gpu bound already.
My fps is stable in the 30s at KLAS.
My screenshot that showed 25fps texture resolution was on ultra causing stutters.
That setting will also have a huge impact with 8gb cards on 4k with high quality scenery.

I keep it on 100 at 2560x1440 with a RTX 3070.

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Got KLAS and this is a littler harder on the card. But with that mainthread problem, I don’t think the card could do or would do much better. Only using 6GB at the airport.

Now off to see my new scenery of Vegas :slight_smile: