I have a Samsung Series 3 NP370R5E-S01 laptop.
I played with several games.
- Battlefield 3 :~50-60 fps
- DayZ: ~30-35 fps),
- World of Warcraft :45-60 fps
Yesterday i rebooted my laptop (usually i just hibernate it, thus the system setup time is always big for me).
Now comes the interesting part: all of these games lost half of the fps:
- Battlefield 3 :~20-30 fps
- DayZ: ~10-20 fps),
- World of Warcraft: ~20-35 fps
What happened? The installed amd driver was 13.6 Mobility Beta2. I tried to reinstall the driver, but nothing. I tried several other drivers: 14.1 Mobility BetaV1.6, 13.12 Mobility WHQL, but nothing.
I opened up GPU-Z and checked the card. Now it is recognised as "AMD Radeon HD 8600/8700M". Last time it was clearly "AMD Radeon HD 8750M".
And i noticed somthing about the pixel fillrate. Now the maximum is only 3.3 GPixel/s. It used to be >6GPixel/s.
The Texture fillrate changed as well. It was like 19 GTexel/s, now it's only 6.6 GTexel/s.
UPDATE: I installed the 12.102 version driver (this is the stock one. it can be downloaded via Samsung SWUpdate). The pixel and texture fillrate was "good" again (pixel: 6.6GPixel/s, texture: 19.8 GTexel/s), but the games' performance was the same (for example WoW: now 25 fps; it should be 45-50).
Now i have leshcat's 13.8_Beta_1_UnifL, but it's the same as the 12.102.
Please help me guys to get back the former performance!