Fullscreen Resoultions: First of all, try to play with the recommended fullscreen resoultion. You can see it with that * sign. If does not work, try other fullscreen resoultions. One of them could make your Gameplay fluentlier and better. Here are a few recommended fullscreen resoultions of the Windows Helpcenter:
> 15-Inch-screen
1024 × 768
> 17- bis 19- Inch-screen
1280 × 1024
> 20- Inch-screen and
bigger 1600 × 1200
Video Quality: Your Quality is on "Medium" normally. Turn it on
ADVICE: It is better, if you turn it on "low", because you can play in middle and small maps as well as the settings "Medium" and "High".
Start in Vollsreen: You can turn it on, or off. But make sure, that will work with the "Fullscreen Resoultions".