Decreasing fps and heavy lag in no time

Hello!

Since I restarted playing H&D2 some months ago, I experience constantly decreasing fps on custom maps, as from the CMP. In some cases I had to quit the game after 20 minutes because it became a slide show. My first thought has been a problem with my internet connection, but my ping was always around 25-35, so I guess it might be my RAM, the graphics card or some kind of bug or incompatibility with H&D2 and my OS that causes the game to flood the RAM.
Morty also wrote, it could be caused by erroneous scripts within the CMP-maps.
As I only experienced this problem while playing on coop, he might be right.
My question is, does anyone know the exact reason for the lag and how to fix or avoid it without restarting the game everytime?


I'm playing H&D2 Sabre Squadron v.1.12.0 on this notebook:

Operating System: Windows 7 Home Premium 32-bit (6.1, Build 7601) Service Pack 1
System Model: CR700
Processor: Pentium(R) Dual-Core CPU T4500 @ 2.30GHz (2 CPUs), ~2.3GHz
Memory: 4096MB RAM
Available OS Memory: 3328MB RAM
Page File: 1462MB used, 5189MB available
DirectX Version: DirectX 11
Card name: NVIDIA GeForce 8200M G
DAC type: Integrated RAMDAC
Display Memory: 1647 MB
Dedicated Memory: 239 MB
Shared Memory: 1407 MB
Current Mode: 1600 x 900 (32 bit) (60Hz)
Native Mode: 1600 x 900(p) (59.978Hz)
Output Type: Internal
Driver Name: nvd3dum.dll,nvwgf2um.dll,nvwgf2um.dll
Driver File Version: 9.18.0013.1407 (English)
Driver Version: 9.18.13.1407
DDI Version: 10
Driver Model: WDDM 1.1
D3D9 Overlay: Supported
DXVA-HD: Supported
DDraw Status: Enabled
D3D Status: Enabled
AGP Status: Enabled


Hopefully, someone has a solution to this problem for me?

This is mine. And it's running like oiled. Make sure you reinstall your windows at least 2 times per year. And I bet if I do a TeamViewer connection with you, I can find your HDD full of useless programs installed, and also if the windows is old....
Is your laptop getting hot? I mean it's base? You can use a laptop cooler for it, and it helps in two ways: it cools down your laptop base a bit and it wont let any dust to come up in the processor's cooler..