Low 2D performance on windows 7

[ilza]

Hi there.
At first I want to say a great thanks to all the creators and developers of this awesome Passmark Software.

Not far ago I have updated my system from Windows Vista SP1(64bit) to Windows 7 7600.16385 build(64 bit).

And I have got a problem. Before OS update I have made a full benchmark on Vista on Passmark 6.1(64 bit), and after installing Windows 7 on the same hardware I made another benchmark.Also the Passmark 6.1(64 bit) too.

And what I have got? All the results were incredible(almost all tests went more good, fast and etc.) EXCEPT the 2D TEST.

The results of 2D TEST seems really suspicious for me(all results on Win7 were almost 50% decreased compared to the same ones on the Vista SP1 )
For example:

WINDOWS VISTA SP1 64bit
Graphics 2D - Lines: 132.5
Graphics 2D - Rectangles: 92.1
Graphics 2D - Shapes: 57.3
Graphics 2D - Fonts and Text: 343.0
Graphics 2D - GUI: 276.2


WINDOWS 7 7600.16385 64 bit

Graphics 2D - Lines: 67.6
Graphics 2D - Rectangles: 86.9
Graphics 2D - Shapes: 25.8
Graphics 2D - Fonts and Text: 274.1
Graphics 2D - GUI: 129.7


if that helps you - Passmark 7.0 2D test on WINDOWS 7 7600.16385 64 bit

Graphics 2D - Solid Vectors: 4.7
Graphics 2D - Transparent Vectors: 4.5
Graphics 2D - Complex Vectors: 103.2
Graphics 2D - Fonts and Text: 134.3
Graphics 2D - Windows Interface: 75.4
Graphics 2D - Image Filters: 284.3
2D Graphics - Image Rendering: 360.0
2D Graphics Mark: 543.3
PassMark Rating: 1162.7





Video driver:
DESCRIPTION: ATI Radeon HD 3850
MANUFACTURER: ATI Technologies Inc.
BIOS: 113-AB37302-100
DATE: 8-13-2009









Can you help me with this problem?

Thanks, ilza.