How is it possible?

[ConteBlecio]

Hello everyone,
SH4 is still not working perfectly.
After the third time I try the simulator (with or without mods) something is still in the wrong way.
I tried with UBM - UBM+RFB2+RSRDC - UBM+TMO2+RSRDC @ 1605x1050 60hz

In the menu,missions menu,the navigation map and when I pause the game
the system is overloaded and shotdown the computer.
Is the only game that gives me these problems...and I would not burn my motherboard or video...
Of course I followed the advice on installation and removal...reboot reboot reboot...
I can not believe that a 512 MB video card or a processor like mine unable to run a game like that.
If I think of game engines like HL2 from Valve (forgive the example ... but you will understand) I seem to be plunged into a nightmare.

In 3d setting of my video i use Optimal Performance setting..but probably some of you would suggest.
For example Anisotropic settings..anti aliasing...mipmap.
And so on.

Here'is my specs:
RAM 3 GB
Intel Core 2 E7200 @ 2.53 Ghz
Asus P5Q Pro
Ati HD 4850 _512MB_
Driver Packaging Version 8.791-101026a-107884C-ATI
Catalyst™ Version 10.11
Directx version 9.0c (4.09.0000.0904)
Win XP + SP2

I have not had any problems in installation (like the s.o. the video drivers etc) but on the site amd recommend a fix to those who have had installation problems....recommended to install it?
This is the link
http://support.amd.com/it/kbarticles...AGPHotfix.aspx

Thanks for your attention