Hello,

Since I'm moving finally to FS2024 in anticipation of CP/PMDG combo releases, I would appreciate your suggestions for my smooth transitioning. I will also be torturing Chat GPT for a next few weeks 🙂

TIA!

SU4 performance is so good, the only things anybody with a half-decent-low-mid PC has to look out for is VRAM usage (-> texture resolution to MEDIUM, if problematic) and Terrain LOD (100-200, or use AutoFps). Anything else can be high or even ultra

23 minutes ago, Fiorentoni said:

SU4 performance is so good, the only things anybody with a half-decent-low-mid PC has to look out for is VRAM usage (-> texture resolution to MEDIUM, if problematic) and Terrain LOD (100-200, or use AutoFps). Anything else can be high or even ultra

Thanks. I will be using a LOT of AI traffic via PSXT, so I guess I'm staying in 1440/2k resolution until I get my hands on 32GB video card. 

I'm also looking for that guide too, yes SU4 is better and also I'm considering to move to MSFS2024 completely and keep MSFS just in case because I have the ssd space.

However despite of having solid frames with a rtx4090, 64gb ram, i9 11900k and rolling cache at 64gb, I'm irritated by the fact that even having on ultra the setting "Off Screen Terrain Pre-Caching" I get terrible frames on custom complex airports when transitioning from, for example one virtual cockpit view from the overhead panel to the side view of the cockpit, like the scenery it is not properly cached, but from there, any cockpit panning is smooth. The issue is only when I stay for several seconds on any particular cockpit view and change to other custom cockpit view, this never happened on MSFS.

Any ideas will be appreciated, thanks!

8 minutes ago, alexcolka said:

I'm also looking for that guide too, yes SU4 is better and also I'm considering to move to MSFS2024 completely and keep MSFS just in case because I have the ssd space.

However despite of having solid frames with a rtx4090, 64gb ram, i9 11900k and rolling cache at 64gb, I'm irritated by the fact that even having on ultra the setting "Off Screen Terrain Pre-Caching" I get terrible frames on custom complex airports when transitioning from, for example one virtual cockpit view from the overhead panel to the side view of the cockpit, like the scenery it is not properly cached, but from there, any cockpit panning is smooth. The issue is only when I stay for several seconds on any particular cockpit view and change to other custom cockpit view, this never happened on MSFS.

Any ideas will be appreciated, thanks!

I dont have that issue with a modest GTX1080TI EVGA 11GB in 1440P.

Maybe a reinstall of drivers ?

Michael Moe

Edited December 15, 2025Dec 15 by Michael Moe

14 minutes ago, alexcolka said:

I'm also looking for that guide too, yes SU4 is better and also I'm considering to move to MSFS2024 completely and keep MSFS just in case because I have the ssd space.

However despite of having solid frames with a rtx4090, 64gb ram, i9 11900k and rolling cache at 64gb, I'm irritated by the fact that even having on ultra the setting "Off Screen Terrain Pre-Caching" I get terrible frames on custom complex airports when transitioning from, for example one virtual cockpit view from the overhead panel to the side view of the cockpit, like the scenery it is not properly cached, but from there, any cockpit panning is smooth. The issue is only when I stay for several seconds on any particular cockpit view and change to other custom cockpit view, this never happened on MSFS.

Any ideas will be appreciated, thanks!

https://forums.flightsimulator.com/t/flashing-effect-when-switching-between-external-cockpit-views/746173

It's a known issue but whether it will be addressed before SU5 is unlikely I think. It's stopped me from flying now. 

 

Edited December 15, 2025Dec 15 by St Mawgan

10 minutes ago, Michael Moe said:

I dont have that issue with a modest GTX1080TI EVGA 11GB in 1440P.

Maybe a reinstall of drivers ?

Michael Moe

I'm on latest drivers, but many thanks.

5 minutes ago, St Mawgan said:

https://forums.flightsimulator.com/t/flashing-effect-when-switching-between-external-cockpit-views/746173

It's a known issue but whether it will be addressed before SU5 is unlikely I think. It's stopped me from flying now. 

 

I'm very aware of that other issue, many thanks. The one I'm referring to is different, is like the surrounding complex custom airports scenery, need to catch up (and get terrible frames for 1 or 2 seconds) when I stay parked looking at one particular virtual cockpit area like the overhead or down to the radio stack for several seconds and then change quickly to another custom cockpit view.

22 minutes ago, alexcolka said:

I'm irritated by the fact that even having on ultra the setting "Off Screen Terrain Pre-Caching" I get terrible frames on custom complex airports when transitioning from, for example one virtual cockpit view from the overhead panel to the side view of the cockpit,

Yes, I have this same issue and have been for quite a while even before SU4.  It seems related to TLOD.  If I use AutoFPS to limit TLOD on the ground, the problem goes away for the most part...

2 minutes ago, Flic1 said:

Yes, I have this same issue and have been for quite a while even before SU4.  It seems related to TLOD.  If I use AutoFPS to limit TLOD on the ground, the problem goes away for the most part...

Ah! at last some light, glad I'm not the only one. Will try this AutoFPS to see what happens, I was reluctant to use any external improvement utility, many thanks!

Unfortunately, I have the same problem and haven't found a solution… It was indeed one of the beta versions, but it didn't last long.
 

TLOD 50

Will try it anyway, there is time to experiment.

2 hours ago, alexcolka said:

I'm also looking for that guide too, yes SU4 is better and also I'm considering to move to MSFS2024 completely and keep MSFS just in case because I have the ssd space.

However despite of having solid frames with a rtx4090, 64gb ram, i9 11900k and rolling cache at 64gb, I'm irritated by the fact that even having on ultra the setting "Off Screen Terrain Pre-Caching" I get terrible frames on custom complex airports when transitioning from, for example one virtual cockpit view from the overhead panel to the side view of the cockpit, like the scenery it is not properly cached, but from there, any cockpit panning is smooth. The issue is only when I stay for several seconds on any particular cockpit view and change to other custom cockpit view, this never happened on MSFS.

Any ideas will be appreciated, thanks!

I have a very similar system. TLOD 200 is too high on the ground, I found TLOD 100 helps with panning stutters, but you will see it's not enough while in the air.... Enter stage right, auto FPS. Great free app.

Out of all settings, TLOD is the one that makes the biggest difference.

A good test is in the Fenix at EGLL, either the default Gaya or inibuilds version. If you can get things smooth there, then I think you'd be pretty good at any other major airport.

Insofaras a settings guide for SU4 is concerned, you just need to stick to the old ones.  It is possible to tune out all of the performance gains by pushing some of the settings up a notch like terrain LOD, shadows, object LOD and texturre resolution, however, I have refrained from doing that so as I can continue to benefit from the slightly better smoothness I have been getting.

Since I set my max framerate to 60 in the Nvidia software and 30 in the sim, using FRG at 2X, I normally get 60 fps or close to most of the time so will not see any improvements in my overall frame rates.

Chat GT can give you a starting point for your settings or using something like the Nvidia app, though most of us have been around the block enough times to know how far we can push things and which we can and cannot push.

Try to be aware of which settings are heavier on your CPU though as I'm guessing that most of us are still CPU bound ratherthan GPU bound.

2 hours ago, Michael Moe said:

I dont have that issue with a modest GTX1080TI EVGA 11GB in 1440P.

Maybe a reinstall of drivers ?

Michael Moe

I already did, maybe I should do it another time, who knows, hahaha, anyway many thanks.