Windows 7 Fps problem in counter strike source

[PenrynHD]

Hi all,
I'm happy earner of Windows 7 Home Premium 32 BIT, but I've got one problem.
Sometimes I get not much FPS in Counter Strike Source. In Windows Vista HOme PRemium 32 BIT, I ' dont remember this situation
maybe that I haven't played on it for a long time.
I've patch 18.3 installed. I have seen this problem on map cs_militia.
I have on this map from 20 - 60 FPS.
On dust_2 I get from 70-100 FPS, on dust I get 60-70 FPS.
It was checked by FRAPS.
My video settings:
ALL for MAX, exception is ANTYALIASING which is set to NONE and ANIZO which is set to Trinear. My resolution is set to 1440x900.
My configuration:
Notebook Asus F3Sa - Intel Centrino T8300 2,4 GHZ, ATI Mobility Radeon HD2600, 3 GB RAM, 250 GB HDD and efficency index or my laptop is (in polish):
Link Removed due to 404 Error
In Vista I have the same result (4,7).
Why?
How should I fix my problem with FPS?

I have newest Catalyst 9.12 installed.

Merry Christmas!

Please reply me FAST

SORRY FOR MY ENGLISH!

Take CARE

 

[kemical]

Have you tried running in compatibility mode?

 

[PenrynHD]

No I haven't because it was running great on Vista.
What do you think?

 

[kemical]

I'd give it a try at least.. I'd also check with the counter strike source forum as there will be information that could help too

 

[ibracadabra]

try new drivers(9.12 hotfix best drivers for my pc) this game work great on my pc and windows 7 ultimate i have problems with prototype and low fps i have 20-30 on that game and i don't know why is that low