Hi guys, although i beleive i had high end computer but my fsx still lag with low fps ... plz help me ... how to resolve this problem. i will include video please check my link for video . even i play latest games like crysis 2 there were no problem with max high setting details. but this one why there is problem plz if u know please help me to resolve this problem . below are my computer spec... Part 1 -

Part 2 -

Motherboard: CPU Type 4x , 4033 MHz Motherboard Name Unknown Motherboard Chipset Unknown System Memory 8181 MB BIOS Type Unknown Display: Video Adapter ATI Radeon HD 5800 Series Video Adapter ATI Radeon HD 5800 Series Monitor SyncMaster T240HD/T240MD(Digital) [NoDB] (H1AK500000) CPU Properties: CPU Type 4x CPUID CPU Name Intel® Core™ i7 CPU 975 @ 3.33GHz CPUID Revision 000106A5h CPU Speed: CPU Clock 4025.23 MHz (original: 3333 MHz, overclock: 21%) CPU Cache: L1 Data Cache 32 KB L2 Cache 256 KB (On-Die, ATC, Full-Speed)Thank UBikash

Try this guide: http://www.simforums.com/forums/setting-up-fsx-and-how-to-tune-it_topic29041.htmlAnd everything here for setting up Windows:http://www.simforums.com/Forums/topic34141_post198187.html#198187I just upgraded to FSX. The first time I installed it, I did it on my own and tried various tweaks. I could not get it to perform very well at all - lots of stutters. So, I did a re-install and followed these two tutorials from beginning to end and now have it running very smooth. Good luck!