Hi guys,

 

I just recently finished building my own budget gaming PC. I installed FSX the other day, and all the default aircraft fly smooth as silk with no stutters. I have only installed the latest version of FSUIPC and the NGX and 777-200LR and 300ER. However, I notice that both PMDG products stutter very noticeably once per second. When I hit the P key to pause the sim, the stutters go away. However, when I resume the flight after hitting P again to unpause, they immediately resume. I've tried tweaking my settings, rebuilding FSX.cfg, and nothing so far. 

 

I am running the following specs:

 

ASUS M5A78L-M LX PLUS AM3+ AMD 760G Micro ATX AMD Motherboard 

AMD FX-6300 6 core CPU @ 3.5 Ghz

8 GB DDR3 RAM

Nvidia GTX 750Ti SC

Windows 8.1 64 Bit

 

 

Do you have Process Explorer? If not, you can Goole and download it. PE will give you lots of info on what your computer is doing in and out of FSX. By any chance do you have any screenshot addons working in the background? They can cause stutters as can any kind of disk management utility that rearranges or indexes your disk. Also, is FSX on its own drive or in a directory other than the default Program Files one? Lastly, you can take a look at the tweak suggestions throughout these forums. Your video card is at the low end for FSX and you may have a graphics pipeline issue.

 

Hope this gets you started.

I'm not sure how it's low end, it has 2 gigs of ram and is a upper mid-range graphics card. This card was just released this year, and FSX has been out since 2006. No screenshot utilities, tried the tweaks, nothing seems to be working.

Try process explorer, it shows you a snapshot of everything going on. Look at VAS, GPU loading and CPU loading. There might be something in the background stealing process time.

Ok I ran it and found nothing out of the ordinary. All my other games like BF4, WildStar, SWTOR, etc. all run flawlessly at high settings, so at this point I'm stumped.

 

 

Ok I ran it and found nothing out of the ordinary

 

A stutter every second? So, what you have is more like stop motion and not fluid at all. This is pretty extreme.  Follow the suggestions for fsx.cfg in the PMDG introduction documentation (either NGX or T7) and if you run out of ideas submit a trouble ticket for help from PMDG at support.precisionmanuals.com. My rig is homebuilt last generation Core2 with a current mid level GeForce 760Ti 2G and she is fluid except for a slight acceptable stuttering at Aerosoft Heathrow. Keep in mind the bottleneck is the CPU not the GPU. Process Explorer should reveal if you are using all the CPU cores and show FSX running 85-99% of CPU load. Hope this helps.

If it's just PMDG then it's probably time to submit a ticket. Go to their web site and select Support/Product Support. They're really good at problem solving and take your concerns seriously. Great guys to work with.

 

Good luck and let us know how it goes.

I'm not sure how it's low end, it has 2 gigs of ram and is a upper mid-range graphics card. This card was just released this year, and FSX has been out since 2006. No screenshot utilities, tried the tweaks, nothing seems to be working.

FSX is VERY CPU dependant. I upgraded from a 560ti to a 780 and saw ZERO improvement in FPS overall. When I upgraded from my old Core i7 at 4GHz to new one at 4.9GHz, saw a big increase in FPS...

It's your fsx.cfg file that needs tweaking.

 

It's your fsx.cfg file that needs tweaking.

 

Care to elaborate? I have the same problem ever since i re-installed FSX on a new harddrive.

Turn off Hyperthreading in the BIOS.  I had to when I went from WIn 7 to 8.1  My stuttering was very bad.  Totally different tweaking process in 8.  I'm surprised you haven't mentioned that your joystick stopped working.