Which GTA4 game should I buy?

Try lowering graphics. Go to options> graphics and try resolution of 800X600 and set everything like shadow, reflection, textures to low and decrease sliders of traffic, detail, etc. to 0. Restart the game and see if it works.

If its running at normal speed then increase graphics according to your PC's power just do hit and trail to get best balance between game speed and graphics quality.

GTA 4 Minimum System Requirements Processor: Intel Core 2 Duo 1.8Ghz or equivalent AMD Athlon X2 64 2.4Ghz Memory/RAM: 1GB for XP and 1.5GB for Vista Video Card: 256MB NVIDIA 7900 or 256MB ATI X1900 Hard Disk Space: 16GB free Operating System: Windows XP SP3 or Windows Vista SP1 GTA 4 Recommended System Requirements Processor: Intel Core 2 Quad 2.4GHz or equivalent AMD Phenom X3 2.1GHz Memory/RAM: 2.5 GB for XP or Vista Video Card: 512MB NVIDIA 8600 or 512MB ATI 3870 Hard Disk Space: 18GB free Operating System: Windows XP SP3 or Windows Vista SP1 I would suggest you to try lower your resolution in options...if not the problem is with your graphics card..

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.