problem na ekranu

imam problem z ekranom vsaj mislim, da je na ekranu. ko igram igro ali pa predvajam video, se slika ne predvaja dovolj hitro. nekateri deli filma ali igre so v zaostanku. hotel sem posneti video, da bi vam pokazal kaj mislim, vender na video ni tega problema.

Kaj lahko naredim?

namizni računalnik
monitor: cibox C1925
grafična: ati radeon HD 5770
http://www.hardocp.com/article/2010/07/...

Monitor:
Name Cibox C1925 on ATI Radeon HD 5700 Series
Current Resolution 1280x1024 pixels
Work Resolution 1280x984 pixels
State enabled, primary, output devices support
Monitor Width 1280
Monitor Height 1024
Monitor BPP 32 bits per pixel
Monitor Frequency 60 Hz
Device \\.\DISPLAY1\Monitor0

grafična:
ATI Radeon HD 5700 Series
GPU Juniper
Device ID 1002-68B8
Subvendor Gigabyte (1458)
Current Performance Level Level 1
Current GPU Clock 156 MHz
Current Memory Clock 300 MHz
Voltage 0.950 V
Technology 41 nm
Die Size 40 nm?
Release Date Oct 13, 2009
DirectX Support 11.0
OpenGL Support 5.0
Bios Core Clock 900.00
Bios Mem Clock 1200.00
Temperature 42 °C
Core Voltage 0.950 V
BIOS Version 113-AAXXXXX
ROPs 16
Shaders 800 unified
Memory Type GDDR5
Bus Width 64x2 (128 bit)
Pixel Fillrate 2.5 GPixels/s
Texture Fillrate 0.0 GTexels/s
Bandwidth 76.8 GB/s
Noise Level Moderate
Max Power Draw 108 Watts
Count of performance levels : 1
Level 1
GPU Clock 156 MHz
Memory Clock 300 MHz


procesor:
Intel Core 2 Duo E7400
Cores 2
Threads 2
Name Intel Core 2 Duo E7400
Code Name Wolfdale
Package Socket 775 LGA
Technology 45nm
Specification Intel(R) Core™2 Duo CPU E7400 @ 2.80GHz
Family 6
Extended Family 6
Model 7
Extended Model 17
Stepping A
Revision R0
Instructions MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Intel 64
Virtualization Unsupported
Hyperthreading Not supported
Fan Speed 1380 RPM
Bus Speed 266.7 MHz
Rated Bus Speed 1066.6 MHz
Stock Core Speed 2800 MHz
Stock Bus Speed 266 MHz
Average Temperature 40 °C