Minimal improvement in FPS, but the sim seems more fluid in general.Certainly worth installingCould be a placebo effect though ;)Dan.

HiJust d/loaded and installed last night.Did some "tests"...like flying the most frame hit a/c from my hanger in the most framed hit scenery that I have!There was not much different from the old DirectX 9b. Very very slight stutter on short finals( 2sec)..other than that not much I see.Other sceneries and a/c(defaults) were excellent!My specs: P3 1Gig and Vid card GF3 with 64mb and 786mb memory SDRAM...Yeah yeah it is a very OLD system...can't wait to upgrade to new system SOON!! :)Happy Flying.

No noticeable improvement in fps here either but I also had a sense that textures were loading a bit quicker and there seems to be a bit less pausing when changing views.

Hi,My results are like Zevious Zoquis says, no noticeable improvement in Frame Rate, but textures load a bit faster when switching views.Jim

What is the download link? Microsoft is still showing 9.0b.

Howard - See www.microsoft.com/downloads/search.aspx?displaylang=en and then click on the "DirectX 9.0c End-User Runtime" link on the top right-hand menu box. This is not a self installing file. Unzip it to a temp location and then run the setup from there.Doug

I am seeing similar improvements in texture loading times, and maybe a slight improvement overall in smoothness. Of course as Dan mentioned, that could be a placebo effect. I am fairly sure textures are loading faster overall however. No problems so far.

Hello All,OK, used a base line flying fron KWER over NYC with Aerosoft's Manhatten scenery with ALL SLIDERS MAXED, (my usual setting).(ai traffic {my traffic} set at 40%).With old Dx9b with frames locked at 25, experienced a low of 10 and a high of 25. Experienced a slight stutter on changing views.With new Dx9c with frames locked at 25, same exact route, time of day, weather and such, noticed a slight increas in fps and a better increase in smoothness for the sim. Keeping in mind, and stutter or jerking is NOT acceptable for me. NO stutter on changing views.I saw a low of 11 and a high of 25. Both flights were taken in the Citation X standard with all features the same.System: P4 3.2 OC'd to 3.54 800fsb ASUS P4C800-E Delux 800fsb Kingston Hyperram PC3200 GeForce Ti-4600 128 OC'd 310 - 685 Omega 1.4523a drivers air cooling 13 fans total in case. cpu temp 43C mb temp 38COverall opinion of Dx9c -- a modest improvment, probably would see more when my ATI 9800 returns from being repaired, (bad chip).Best to all,Clayton T. Dopke (Clay)Major, USAF (retired)"Drac"

Slight increase in Frame Rage....also, less stuttering. However, I should point out that I un-installed my video card drivers before installing 9.0c. After installing 9.0c, I installed the latest drivers from Nvidia's site. So these drivers could also be the cause.AMD 2200XP, GF4 Ti4600/128MB RAM, 1.5GB RAM, SoundBlaster Live! Value (I know, I know, but its still working like a dream, so I ain't giving it up :) ), Asus A7V333.

Tisk, Tisk, now you know that you only change one thing at a time cause if you change more than that, you never know which one was the magic bullet. sorry, couldn't resist, way back when, in road racing, as a driver I always wanted certain changes to be made in the car . . . my crew chief always use to say that to me . . . and now I had the chance to give it to some one else. And yes, I know, it's very difficult just to change ONE thing.BestClay

Ive been running if for weeks with WINXP SP2 RC1.Didnt' even know it =P