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FSX lags with a very good rig...

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I just bought this pc. It´s a very good pc, and I get 60 fps on every game i play, except FSX... I have installed fsx on the /C drive, the same drive as the OS. The addons i use in game is:

Pmdg 737ngx

Active sky next


aivlasoft EFB


When i`m on the ground, it lags alot... But when i get airborne, it doesn´t lag at all..


Is this because FSX and OS is on the same drive? Or do i have to overclock the cpu? the cpu is a intel core i7-477k 3.5 GHz.


My rig:


CM Storm Stryker Gaming Big Tower
Vifter: 2x 120mm Front, 1x 200mm Topp, 1x 140mm  

XFX ProSeries XXX Edition 850W PSU
ATX 12V V2.2, 80 Plus Bronze, Modular, 4x 6+2pin  

Intel Core i7-4770K
Socket-LGA1150, Quad Core, 3.5GHz, 8MB, 84W, HD460

Cooler Master Seidon 120V CPU Kjøler

775/1150/1155/1156/1366/2011, AM2(+)/AM3(+)/FM1, 

Crucial DDR3 BallistiX Sport 16GB KIT
16GB kit (8GBx2), Sport,1600MHz, 1.5V, 

ASUS Z97-DELUXE, Socket-1150
ATX, Z97, DDR3, 3xPCIe-x16, SLI/CFX, HDMI, DP

MSI GeForce GTX 780 Gaming 3GB PhysX
"Twin Frozr IV", with WATCH_DOGS 

MSI GeForce GTX 780 Gaming 3GB PhysX
"Twin Frozr IV", with WATCH_DOGS 

Kingston HyperX 3K SSD 240GB 2.5"
SATA 6 Gb/s (SATA3.0), 555MB/510MB/s read/write, 

Seagate Barracuda® 1TB
SATA 6Gb/s (SATA 3.0), 64MB Cache, 7200RPM, 3.5"  

Samsung DVD Writer, SH-224DB
SATA, DVD±R: 24x, DVD±R DL: 8x, CD-R: 48x, Bulk,

CM Storm Devastator - MS2K & MB24
USB 2.0, 800~2000 DPI, Nordic, Custom membrane, 

MS ROYALTY Win Ultimate 7 Nordic
32/64 bit 1.00 497608

MS COA Label Windows Ultimate 7
Nordic, 32/64 bit 

MS DVD Win H.P/Pro/Ultimate 7 NO 64bit

MS ROYALTY Win Ultimate 7 Nordic
32/64 bit

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What do you consider "low fps." Here in the world of FSX, 20fps is considered good  :lol:

The NGX and ASN are the primary causes of your low framerate. You will also have to tweak your fsx config file if you haven't already. Here is a great website for tweaking your config file if you're too lazy to tweak it yourself:

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You have my sympathy but welcome to the world of Flight Sim. Personally I am thinking of taking a brake from it. There are so many other enjoyable things that I could be doing with this Top shelf computer that I have without any of the FS frustration.

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10-12 fps.. It really lags when im on a airport.. (no addon airport)



Its a rude awakening isn't it?

based on the time that you have been a member of this Forum

is it safe to assume that you are new to FSX and FS in general?


There is a lot to learn and hindsight being 20/20 I would say that

had I know from the beginning what was involved I would have

walk away.


Based on the specs you listed the best advice I can give you for FSX

is to uninstall it reinstall it on another drive. Get ride of on of the GTX 780's

Its doing you know good at all unless you are using more than one monitor.


You have virtually the exact hardware NickN recommend on


Go over there and read the i7 4770K at 4.8ghz thread and his FSX Bible.

You have exactly the right hardware for those guides.


There is a guide on this forum and sorry to direct you somewhere else bit the above 4 links

are hands down the best FSX education on the face of the planet earth!


You have along road ahead and that's the best advice you are going to get!

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