Generals ZH stutters - Help!

[Leprekaun]

Hi there. I'm having a strange problem with Generals ZH. Whenever I play a Skirmish game, after playing for a while where I have many units and so does the AI, the game stutters (or freezes) constantly. I've tried playing regular Generals and I've had no issues at all. I have the latest graphics drivers for my ATI card and I've patched ZH with the The First Decade patch 1.03. I've checked ZH and its patched to the latest version (1.04) so can anyone help me?

These are my machine specs:

OS: Windows XP SP3
GPU: ATi Radeon HD 5850 XXX (Drivers: Catalyst 11.2 / Display driver: 8.821)
RAM: Corsair Dominator 4GB DDR3
CPU: AMD Phenom II X4 965 BE (@3.42Ghz)
DirectX: 9.0c

[chickendippers]

Yup that's an issue with the game, just can't handle that many AI players.