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Thread: Need guidance regarding smooth running of FSX

  1. Default Need guidance regarding smooth running of FSX

    Good evening fellas,

    I require some guidance from all of you good people regarding my Flight simulator.

    even though I have a high end pc, my game lags and I m unable to ensure smoothness.

    My pc specs are listed below

    - Intel i7 quad core 7th gen (total 8 cores)
    - 16gb ddr3 Ram
    - 4 gb Nvidia gtx 1080
    - 1 Tb Harddisk

    Its a lenovo legion y520

    I am sure I am doing something wrong due to which I m experiencing this problem. Therefore i require some guidance from all of you experienced flight simmers out here.


  2. #2
    Join Date
    Jan 2012
    San Francisco, California


    CPU 2.8-GHz Intel Core i7-7700HQ CPU Mediocre at best. Laptops have a tendency to be under-powered for FSX unless you keep the sliders from being maxed out.
    Mr Zippy Sent from my keyboard using "Whackamole", NudgeAKey + 2 Fingers

    Emachines T3418 AMD 3400+ processor 2GHZ/256KB L2 Cashe 2Gig Ram 160Gig HDD NVidia GEForce 6100 GPU Running WinXP Home Can't believe it still works! Running FSX Standard with SP1 and SP2

  3. #3
    Join Date
    Jan 1999
    Warren, Michigan, USA


    That is not a high end pc for FSX.

  4. #4


    I have a HP laptop with a gen 4 i3 @ 1.9ghz, 8gb ram and a 750gb hd running at 5400rpm. On board graphics up to a total of 2gb ram. my FSX runs fine. What issues are you having with your rig?

  5. #5


    My question is what OS do you have? Windows 10? Windows 7?
    Chuck B
    i7 2600K @ 3.4 Ghz (Turbo-Boost to 3.877 Ghz), Asus P8H67 Pro, Super Talent 8 Gb DDR3/1333 Dual Channel, XFX Radeon R7-360B 2Gb DDR5, Corsair 650 W PSU, Dell 23 in (2048x1152), Windows7 Pro 64 bit, MS Sidewinder Precision 2 Joy, Logitech K-360 wireless KB & Mouse, Targus PAUK10U USB Keypad for Throttle (F1 to F4)/Spoiler/Tailhook/Wing Fold/Pitch Trim/Parking Brake/Snap to 2D Panel/View Change. Installed on 250 Gb (D. FS9 and FSX Acceleration (locked at 30 FPS).

  6. Default

    LT's are better in window mode and not full screen.

    FSX Rules!!
    What time's the next flight?

  7. #7


    My question is what OS do you have? Windows 10? Windows 7?
    Chuck B

    I'm using Win 10...

  8. Default

    Quote Originally Posted by amberdog1 View Post
    My question is what OS do you have? Windows 10? Windows 7?
    Chuck B

    I'm using Win 10...
    I m also using windows 10.. I haven't installed any addon scenery yet.. but yes I am using ICE ai traffic.. it might be because of it.. I don't like empty airports actually...

  9. Default

    my fsx starts lagging, in other words when I'm about to reach an airport OMDB (for instance) my sliders are not set at max.. I have applied some tweaks as well like Jobscheduler and bufferpools..

    I have also observed that sometimes it runs smooth but sometimes it doesn't.. may be its due to background processes, I dont know exactly.

  10. #10
    Join Date
    Apr 2013
    5 NM NE of EDXF


    First of all, you need to weed out the possible applications running in the background that you don't need. That would be things like iTunes, Skype and Facebook open in a browser, just to name a couple.

    Then update Windows 10 to the latest level, update the nVidia drivers to the latest level, and see if you can find any possible updates for your other drivers on the Lenovo website. After that, clean up the hard drive, using the control panel's Free Up Disk Space utility. Then defrag the hard drive, and do the cleanup and defragging that on a regular basis.

    Finally, go here:

    and follow the steps in there for tweaking FSX.CFG.

    This will take time, but it will be time well spent.


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