User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a6pre) Gecko/20100624 Minefield/3.7a6pre Build Identifier: As I tried all tests in Flying Images section I found that Large IE Logo spins extreme slow. While on IE 9 Preview 3 it works fine. Also you could check other new tests like Amazon Shelf and Mr. Potato Gun where Firefox is having issues - while IE 9 Preview 3 is not. I remember that somewhat before Firefox also had problems with other flying images, but it was fixed. Reproducible: Always Steps to Reproduce: 1.Go to http://ie.microsoft.com/testdrive/Performance/01FlyingImages/Default.html 2.Try Large IE Logo 3. Actual Results: Logo was spins extreme slow. Expected Results: It should spin fast. Nvida GeForce 8400GS (257.21 drivers)

Oskar, with d2d turned on, or not?

was quite slow without d2d for me, but at about 25 fps with. Small images were 60fps. The Large IE logo is 1800x1800, so if IE is faster, it's possible that they're caching the smaller scaled down version (which would make sense for us to do as well), instead of scaling it down each time.

Boris, with D2D on.

Vlad, could you test Mr. Potato Gun and Amazon Shelf and compare it to IE 9 Platform Preview 3? Firefox is having problems with those tests.

CONFIRMED. Mozilla/5.0 (Windows NT 6.1; WOW64; rv:9.0) Gecko/20100101 Firefox/9.0 AMD Catalyst: 11.9 Adapter Description ATI Mobility Radeon HD 4500/5100 Series Vendor ID 1002 Device ID 9553 Adapter RAM 512 Adapter Drivers aticfx64 aticfx64 aticfx32 aticfx32 atiumd64 atidxx64 atiumdag atidxx32 atiumdva atiumd6a atitmm64 Driver Version 8.892.0.0 Driver Date 9-8-2011 Adapter RAM (GPU #2) Unknown Adapter Drivers (GPU #2) Unknown Direct2D Enabled true DirectWrite Enabled true (6.1.7601.17563) ClearType Parameters Gamma: 2200 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 100 WebGL Renderer Google Inc. -- ANGLE (ATI Mobility Radeon HD 4500/5100 Series) -- OpenGL ES 2.0 (ANGLE 0.0.0.740)GPU Accelerated Windows1/1 Direct3D 10

(In reply to RNicoletto from comment #5) > CONFIRMED. > Mozilla/5.0 (Windows NT 6.1; WOW64; rv:9.0) Gecko/20100101 Firefox/9.0 > AMD Catalyst: 11.9 > Adapter Description ATI Mobility Radeon HD 4500/5100 Series > Vendor ID 1002 > Device ID 9553 > Adapter RAM 512 > Adapter Drivers aticfx64 aticfx64 aticfx32 aticfx32 atiumd64 atidxx64 > atiumdag atidxx32 atiumdva atiumd6a atitmm64 > Driver Version 8.892.0.0 > Driver Date 9-8-2011 > Adapter RAM (GPU #2) Unknown > Adapter Drivers (GPU #2) Unknown > Direct2D Enabled true > DirectWrite Enabled true (6.1.7601.17563) > ClearType Parameters Gamma: 2200 Pixel Structure: RGB ClearType Level: 100 > Enhanced Contrast: 100 > WebGL Renderer Google Inc. -- ANGLE (ATI Mobility Radeon HD 4500/5100 > Series) -- OpenGL ES 2.0 (ANGLE 0.0.0.740)GPU Accelerated Windows1/1 > Direct3D 10 By the way, no problems with IE9 on the same PC.

Just FYI, here you are my test results on IE Test Drive demos. My PC specs ==> http://pastebin.com/6j8as3XE Flying Images "All browsers" demo (36 images) Mozilla Firefox 9.0.1 ==> 39-41 FPS Mozilla Firefox latest nightly + "layers.acceleration.force-enabled" = TRUE ==> 39-41 FPS Google Chrome Canary 18.0.1017.2 + "Override software rendering list" = ENABLES ==> 60 FPS Opera Browser 11.61 ==> 60 FPS Flying Images "Large IE logo" demo (36 images) Mozilla Firefox 9.0.1 ==> 2-3 FPS Mozilla Firefox latest nightly + "layers.acceleration.force-enabled" = TRUE ==> 3-4 FPS Google Chrome Canary 18.0.1017.2 + "Override software rendering list" = ENABLES ==> 60 FPS Opera Browser 11.61 ==> 48-55 FPS

Win 7 with HWA I get 60 fps on the Large IE Logo. WFM