To those that have an RTX 4090: Do you achieve 60 FPS in busy and hardware intensive places, such as London or New York, when you have set FSLTL to, e.g., 100 IFR aircraft? I know that without AI traffic, the RTX 4090 (frame generation ON) can easily produce 80-100 FPS in these places, but does heavy AI traffic have a similar impact as with the RTX 3000 series? Essentially, does the RTX 4090 still produce 60 FPS?
With regards to the RTX 4070 and RTX 4080, I have doubts as to whether they would deliver 60 FPS (for the RTX 4070 I’m pretty sure it won’t be able to). I’m particularly interested in the RTX 4090.
In MSFS the AI traffic processing primarily relies on the CPU. The CPU handles the calculations and processing required for managing AI aircraft, including their flight paths, behaviors, and interactions with the player’s aircraft.
Yes, I know that AI traffic has a heavy impact on the CPU. However, it appears that the RTX 4090 is able to overcome the CPU bottleneck through its frame generation feature. I do wonder, though, to what degree it is able to do that. I.e. if I fly with 100 AI IFR aircraft in London with the RTX 4090, will I still have 60 FPS? Has someone tested that? Or would someone with an RTX 4090 be happy to activate FSLTL or FS Traffic at London or New York, preferably with third party addon airports, and test it?
With my current RTX 3090 at 4K resolution and High/Ultra settings, plus my i7-12700, I’m unfortunately getting 20-30 FPS when AI traffic is active in these places, but I wonder whether the RTX 4090 could be the game changer.
I agree with the previous speaker! It is pointless to buy a 4090 for this processor. I have Vsync 50% 30FPS limitation with proper settings and I can use any FSLTL traffic without any hangs.
It’s not the FPS that is important above 30, it’s the no hang.
Here’s a vid (4K) showing some taxiing at Heathrow in the Fenix:-
As you can see, FPS drops to mid 20’s. Dev mode FPS counter shows raw FPS. I had “frame gen” on and the Nvidia FPS counter was showing double this.
PC is 5800X3D / RTX4090.
I used to have an RTX3090 and that had similar FPS (maybe low 20’s instead of mid 20’s) as MSFS is CPU limited in this scenario. No “frame gen” smoothing with the 3090 though.
Frame generation cannot mask CPU stutters. It simply generates a secondary frame for every frame the CPU has actually managed to render and noticeable stutters last for several frames at once.
Hopefully MSFS-2024 will have better threading for AI traffic and thus less stutter.
Yeah! I have said it for a while, don’t invest on a new gear for MSFS 2020 since it won’t make a big difference. And you all just confirmed that. Hopefully MSFS 2024 will do much better.
Thanks all for your responses. I did notice, though, that the in-Sim FPS counter does not capture generated frames, see here from 2:00 where ObsidianAnt is using MSI Afterburner: https://www.youtube.com/watch?v=ltAp01Cqfgo
I guess it means that the true frame rate may be double than what the in-Sim FPS counter is showing?
Based on this, is your experience with the RTX 4090 noticeably better than with the RTX 3000 series or below? Or would it be better as a first step to get an i9-13900K which should give me about 20% more CPU power?
A reasonable solution is to sell the motherboard and processor! AMD 5800x3d or 7800x3d with matching motherboard (I did the same.) This will be a definite improvement, and a newer Intel processor would be a big disappointment. And the video card can stay.
a 4090 gets you nowhere in MSFS unless you want to do VR, the sim VERY CPU limited, especially traffic which is nearly 100% cpu based. I have 13700k and 4070 at 1440p and get a solid 50 fps in high demand areas, 80+ in rurual and with frame gen on it’s always steady around 100fps.
