Good morning everyone!Maybe some of you Technic-Gurus can help me out of this.After upgrading my GC from GTX280 to GTX470 my overall FSX performance has greatly improved.BUT the performance when using some 3rd party planes, especially the PMDG 744 or even those POSKY Airbusses drops down to about 30- fps (in external Views).Before upgrading i had around 60+ fps using the same addons and views. So maybe someone has a clue on this. Maybe there a certain thing to set i have missed?Thanks for your support!Best Regards,Thomas Rank

Checklist: 1. Check video drivers updated. 2. Backup fsx cfg then delete it. Restart computer. 3. Check nvidia settings maybe visual quality all the way up LoL

Drivers: Up to Date.FSX: complete reinstallPerformance: Still low. ;)Thanks anyway!Tom

What is your os? I see people running 32bit systems with a 1gig or higher gpu wondering why there performance sucks

I just got a new 64 bit PC Wednesday and it has made all the differance in the world. I can actaully run everything maxed out and enjoy my flights without the worry of a CTD. FINALLY!!Remember FSX is more CPU based than GPU based.

I remeber vaguly that Tabs had some similiar problem. He did a complete format of the drive and reinstalld windows and it fixed his problem.Remeber that you do this on your own risk and nothing is garantueed.

Drivers: Up to Date.FSX: complete reinstallPerformance: Still low. ;)Thanks anyway!Tom

Tom,You used a driver cleaner/sweeper to get all the contents of your old drivers removed before installing the new ones right?Sean Campbell

I remeber vaguly that Tabs had some similiar problem. He did a complete format of the drive and reinstalld windows and it fixed his problem.Remeber that you do this on your own risk and nothing is garantueed.

Indeed - when I went from my old 260 to the 570, I had tons of problems until I clean installed Win7 from scratch - it sucks to have to do it but it definitely fixed my problem.

You can also see if you have SLI enabled. I get better framerates when SLI is turned off. Since you installed a new card, SLI might be enabled by default.Worth a tryRick Verhallen

Did you delete your fsx.cfg file, and select clean install from the nvidia driver installer?

Even if you did a complete reinstall, I'm not certain that uninstalling fsx would delete fsx.cfg, which is in Users/...Why not manually delete it, restart and and then do the ******* tweak on your new fsx.cfg?? It can't hurt.jeff

Wohoo!Thanks for all your replies.I'm running Vista 64bit. FSX was running very smooth on it before i installed the new GC.I will give your advices a shot today and see what happens. Reinstalling Vista and FSX will be my very last choice. :( Just want to say a big thanks to all of you for your kind help!I hope to get that problem solved at least before the NGX has ots rollout.Best regards!Tom

Ok...A Simple delete of the FSX.cfg seems to have solved the problem.For some reason i have to limit the Framerate to exactly 63fps to get FSX run smooth. A change to 62 or 64 fps results in heavy stuttering.Don't know why, but i think i can live with that. ;)Again a big thank you for your help!Tom

For the love of god, DO NOT LIMIT FRAMES in FSX. You DON'T need to do this, get an external fps limiter and set it to 30 or 35.. best results.

For the love of god, DO NOT LIMIT FRAMES in FSX. You DON'T need to do this, get an external fps limiter and set it to 30 or 35.. best results.

Hey after reading that he has to have his frames set at exactly 63 this really shows how random and different FSX interacts with different setups. So that external limiter may or may not work for him. If he's, and others reading this are happy with your performance and aren't having CTD's etc then just leave the cfg and other external stuff alone. Because while some of us have that burning desire to get more smoothness, FPS and higher image quality.It can often create unexpected problems specially with the multiple complex addons many now run simultaneously as I learnt.