I'm currently running on Windows 10 Home Edition 64bits, My PC is running thanks to an beatiful Intel Core i7 5820k @ 4.2ghz and 16GB DDR4 2666MHZ, and I run the OS on a Samsung 850 EVO 250GB SSD and the Flight Simulator X Steam Edition on a 500GB Samsung 850 EVO SSD, My video card is a EVGA Nvidia Geforce GTX 980 Ti 384 bits 6GB GDDR5 ACX 2.0 SC, my all drivers are up to date!

Here is the main problem I have listed from just putting 1 tweak to like every know tweak in the fsx community and I get low frames I can even get pass 10 - 28fps using the A2A Cessna 172 at Mallorca X Evolution and just 40fps with the Ultralight at Friday Harbor. Ok Yes  I run with 4096 REX 4/Soft Clouds textures but supposely my pc is capable for that and more and other people run it with worse specs and better specs with the same sliders and Texture max load! I had downloaded others people cfg, make a clean cfg, tweaked with ******* Venetubo tool, tweaked manually, just put Affinity mask, bufferpools alone etc.. then together and like that and still no perfomance! Same fps on DX9 and DX10, and no gain on fps. For those thinking ins't the PC as I run normally any stress test, 3DS MAX 2016, Battlefield 4, SMITE,  LoL, Unreal Engine 4, even Witcher 3 and Phantom Pain ultra 60fps @ 1080p! and with flight sim I just can't stop experiencing low fps, lag spikes, stutteres, slow loading texture, OOM, CTD when Switching full screen to windowed and vice versa. I'm really deseperate as I had been saving a lot for this PC to use it for Flight Sim purpose to give me this result and I know is capable running at least 40fps with almost everything maxed on the most demading scenarios, aircraft and settings without any problem. Is the 3rd time I reinstall FSX: SE (Clean unistallation and reinstalls!) which is a pain reinstalling the add-ons again!

I just hope the community can help me fixing this issue, thanks you!

P.S: Nvidia Inspector are basically Matt Davies one with 1/2 Refresh Rate

Wow fanatstic rig but there is something very wrong going on. You say your benchmarks are good? then its not the PC.Your not supposed to tweak fsx-se as its already very optimised

 

Are you sure you have run fsx-se and nvidea inspector in default mode?

 

If not try deleting your fsx.cfg and build a new one and then test again. If thats okay then you can slowly tweak the fsx,cfg one item at a time and then use Matts profile as thats the one Im using as well with a i2500k OC to 4.7 and a GTX 780 and have fantastic performance and you should as well

You can't throw money at FSX and expect it to perform well. The code is somewhat dated, and calculating data way beyond the scope of most modern day games. If you really sit down and think about everything going on in the sim at any one moment it's staggering how many variables need to be accounted for. Sacrifices and compromises need to be made. 4096 textures with high autogen settings, high traffic settings, high weather settings, etc. simply won't work no matter what system you have. It's important to decide what exactly you want to experience from the sim and focus on getting that instead of trying to get everything. If you're into systems-heavy airliners for instance, your going to need to make sacrifices in autogen or traffic in order to get a smooth flight. Or if you're flying out of detailed scenery, you might also need to turn down the sliders a bit. Even at Friday Harbor in the ultralight there are settings you could use that would make FSX choke. Orbx manuals tend to recommend dense autogen settings for the best balance between visuals and smoothness. Not very dense or extremely dense, just dense. In a complex aircraft you might need to goto "normal". Nothing wrong with your system or your setup... it's just the nature of the beast. There might be a few things you can optimize to get back a few FPS, but in the long run you'll find the best way to gain smoothness is making compromises. Personally, I found I could hardly tell the difference between high resolution clouds or high autogen settings with houses just a little bit closer apart. Not gonna notice these things in an airliner climbing out at 180kts/1500fpm+. But I did find I could tell the difference when I was stuttering on final approach and could barely hand fly it due to the lack of fidelity. Smoothness is the most important part of a flight sim, the eye candy is really not imperative to the enjoyment and often over emphasized as being such.

It's an ancient graphics engine, you cannot throw a complicated addon aircraft and 4096 environmental textures and get good fps. Resize your clouds to 512, and scale back sliders like autogen to normal or dense.

"with flight sim I just can't stop experiencing low fps, lag spikes, stutters, slow loading texture, OOM, CTD when Switching full screen to windowed and vice versa"

 

He has a lot going on there. Im using the same settings as OP , all maxed except water 2xhigh and traffic low and Im in orbx with the A2A 182 and smooth as silk although Im using textures 2048 and not 4096 in the sim itself. REX is 4096.

 

AHA! the difference is Im using DX10 Steves fixer! OP you may want to consider switching to DX10 because that swaps the bigger load from the CPU to the GPU and you put that 980TI to good use. Or swap to P3D , same thing

crashes when switching views or accessing the menu mean you need the ui core dll in your main fsx folder

"with flight sim I just can't stop experiencing low fps, lag spikes, stutters, slow loading texture, OOM, CTD when Switching full screen to windowed and vice versa"

 

He has a lot going on there. Im using the same settings as OP , all maxed except water 2xhigh and traffic low and Im in orbx with the A2A 182 and smooth as silk although Im using textures 2048 and not 4096 in the sim itself. REX is 4096.

 

AHA! the difference is Im using DX10 Steves fixer! OP you may want to consider switching to DX10 because that swaps the bigger load from the CPU to the GPU and you put that 980TI to good use. Or swap to P3D , same thing

Still no fps improvement when switching to DX10 Steve fixer and the flight simulator looks way pale. The same issue was happening to me with P3Dv2 no more than 20fps.

crashes when switching views or accessing the menu mean you need the ui core dll in your main fsx folder

Thanks I'll try it!  :smile:

Still no fps improvement when switching to DX10 Steve fixer and the flight simulator looks way pale. The same issue was happening to me with P3Dv2 no more than 20fps.

Thanks I'll try it!  :smile:

I wouldnt do that as FSX-SE comes with it pre installed

I wouldnt do that as FSX-SE comes with it pre installed

** Comment removed as I hadn't fully read the thread!

I wouldnt do that as FSX-SE comes with it pre installed

True but the FSX-SE one is way bugged as the legacy version

I wouldnt do that as FSX-SE comes with it pre installed

there are different uianimation dll files. Some people need the 18000 version some need the 16-something version.

I honestly think it's FPS limiters and Nvidia settings. When I had FPS limited 30 and Vync on 1/2 refresh rate, 3 pre-rendered frames I was getting stutters.

 

I change it to unlimited, Vync force on and prerendered to 8, then my FPS went upto 40 steady...

 

 

My advice is to first do the FSX settings to whatever you like then play around with FSX CFG and Nvidia settings .. Also there is no need for 4096, 2048 is still HD

It's an ancient graphics engine, you cannot throw a complicated addon aircraft and 4096 environmental textures and get good fps. Resize your clouds to 512, and scale back sliders like autogen to normal or dense.

 

I've used other games with HD textures everywhere and the framerate drops just as much as FSX does. Take those HD textures away and use the stock 256, 512, and 1024 textures and the framerate goes way up.

there are different uianimation dll files. Some people need the 18000 version some need the 16-something version.

 

I honestly think it's FPS limiters and Nvidia settings. When I had FPS limited 30 and Vync on 1/2 refresh rate, 3 pre-rendered frames I was getting stutters.

 

I change it to unlimited, Vync force on and prerendered to 8, then my FPS went upto 40 steady...

 

 

My advice is to first do the FSX settings to whatever you like then play around with FSX CFG and Nvidia settings .. Also there is no need for 4096, 2048 is still HD

Can post a picture of your nvidia inspector settings , thanks you!

Can post a picture of your nvidia inspector settings , thanks you!

 I advise you check this video. Followed most of his tips including using DX10 with Steve's fixer. : https://youtu.be/wSrObxJaJD8

 

Screenshots:

http://i.imgur.com/DvdwFIT.png

 

http://i.imgur.com/BDsc847.png

 

Also note that these settings might not work for you because I'm using a Titan X. But I guess you can play around to find something that works for you. Just save the default Nvidia Inspector profile as back up and the FSX CFG.