What is D3D9EX in CS2 and why do players need it?

What is D3D9EX in CS2 and why do players need it?

In CS2, just like in previous versions of Counter-Strike, you may come across the launch option -d3d9ex. It is related to Direct3D 9Ex — an improved version of DirectX 9 that optimizes how the game interacts with your GPU and RAM.

The main purpose of D3D9EX is to reduce system load, lower delays when minimizing and maximizing the game, and improve FPS stability. This parameter is especially useful for CS2 players with less powerful PCs, but even on modern systems it helps reduce micro stutters.

You can enable it through Steam launch options:

Open your Steam library.

Find CS2 and open its properties.

In the “Launch options” field, type -d3d9ex.

It’s worth noting that this setting won’t dramatically boost FPS, but it can improve overall smoothness and comfort when switching between windows or, for example, when opening CS2 cases. For most players, enabling D3D9EX is a safe and helpful choice.

Best CS2 case opening sites
1.
HyperDrop
HyperDrop
9.8/ 10
More
+30% deposit bonus
Promo
CSSPOT
2.
CrazyDrop
CrazyDrop
8.9/ 10
More
+45% deposit bonus
Promo
CSSPOT
3.
Forcedrop
Forcedrop
7.6/ 10
More
Promo
CSSPOT