When I run the game, it works perfectly fine. I can play the game on high details without a simple lag, but the problem appears, when I hit the Research Tab. When I hit it, my CPU goes crazy and the research windows is damn laggy. If I stay on the research tab for more than 10 seconds, whole pc freezes and I have to reset my pc... This problem is pretty annoying, because it ruins the gameplay, I can't plan my research tree, coz I don't have time for reading the icons. All I can do is hit Research Tab, quickly hit an icon to begin research, and close Research Tab, then I keep playing and when I want to research new things I need to repeat "the quick research icon clicking"... As I said at the beggining, the game runs fine, only the research tab is the problem...

I've tried many different solutions: Reinstalling game, patching game, updating drivers, checking CPU temperature, trying to play on different maps with different factions, lowering the graphics etc...nothing works

Here's my PC

1256 RAM, HIGHTECH EXCALIBUR RADEON 9550SE, Intel Pentium IV 2GHz, Windows XP home edition+service pack 3