CS2 Hybrid Optimizer

Hybrid Counter-Strike 2 Performance Optimizer (Python + C)

Eliminate Stutters - Stabilize FPS - Clean Your System Before Launch

Select Language
English (current)        Russian

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Overview

CS2 Hybrid Optimizer is an open-source utility designed to improve the overall smoothness of Counter-Strike 2.

The project combines the flexibility of Python with the speed of native C/WinAPI code to perform system cleanup, cache maintenance, OS-level scheduler tuning, and automated game launching.

The primary goal is to improve:

• Frame pacing and frame-time consistency
• 0.1% Low FPS
• Shader compilation behavior
• System cleanliness before launch
• Overall gameplay smoothness

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Architecture

Component	Role	Technologies
Python (Brain)	Application logic, CPU thread detection, Windows Registry scanning, path discovery, launch configuration, logging, and the console UI	ctypes, winreg, multiprocessing, subprocess
C Engine (cleaner.dll)	Performs cache cleanup, RAM standby list purging, and timer resolution requests directly through the Windows/NT API	WinAPI, ntdll, kernel32, shell32

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Features

Cache & Memory

Feature	What It Does	Effect
GPU Cache Reset	Cleans D3DSCache, NVIDIA DXCache/GLCache, and AMD DxCache/OglCache/VkCache folders	Restores smoothness after driver or game updates
Steam Shader Cleanup	Removes obsolete shader data from Steam AppID 730's cache	Faster map loading
RAM Standby List Purge	Calls the undocumented NtSetSystemInformation routine to release cached RAM pages held in the standby list	Frees memory without forcing other running apps to page back in from disk
High-Precision System Timer	Requests the highest available timer resolution via NtSetTimerResolution (typically ~0.5ms instead of Windows' default ~15.6ms)	Reduces frame-pacing jitter; released automatically when the optimizer exits

System-Level Tuning

Feature	What It Does	Effect
Smart CPU Core Allocation	Detects CPU threads and divides by two to target physical cores (SMT / Hyper-Threading aware)	Reduces shader-compilation related stutters
High Performance Power Plan	Activates Windows' High Performance power scheme	Prevents CPU throttling during gameplay
Xbox GameBar / GameDVR Disable	Disables AppCaptureEnabled and GameDVR_Enabled registry keys	Removes background recording/capture overhead
Win32PrioritySeparation Tuning	Sets the Windows scheduler to short, fixed quantums favoring the foreground app	Improves responsiveness of the active window
MMCSS Responsiveness Tweak	Sets SystemResponsiveness to 0 so background tasks no longer reserve CPU time during gameplay	More CPU headroom for cs2.exe
Fullscreen Optimizations Disable	Disables DX exclusive-fullscreen optimization specifically for cs2.exe	Can reduce input latency in fullscreen mode
DNS Cache Flush	Runs ipconfig /flushdns	Clears stale DNS entries before connecting to matchmaking

Launch & Convenience

Feature	What It Does	Effect
Defender Exclusion Automation	Adds the CS2 install directory to Windows Defender exclusions (shown in console and logged)	Prevents background scanning during gameplay
Anti-Hang Protection	Forcefully terminates stuck cs2.exe processes before launch	Prevents launch conflicts
autoexec.cfg Generator	Writes a tuned autoexec.cfg (network rates, interpolation, fps_max) into the CS2 cfg folder	Consistent in-game settings on every launch
Perfect Launch Generator	Generates optimized launch options and starts CS2 through Steam	Consistent startup configuration
Post-Launch Priority Boost	A few seconds after launch, sets cs2.exe's process priority to High via PowerShell	Smoother CPU scheduling for the game process

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Generated Launch Parameters

The optimizer automatically creates launch options similar to:

-high
-nojoy
-fullscreen
-threads X
+fps_max 0
+exec autoexec

Where X is automatically calculated according to the number of detected physical CPU cores.

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How It Works

1. Calculates optimal launch options based on detected CPU threads/cores.
2. Detects the installed Counter-Strike 2 location via the Windows Registry and adds the install folder to Windows Defender exclusions.
3. Terminates any stuck cs2.exe process before starting.
4. Estimates current cache size for the summary report.
5. Calls the native C engine to clean GPU shader caches, clean the Steam shader cache, purge the RAM standby list, and request a high-precision system timer.
6. Flushes the DNS cache and switches Windows to the High Performance power plan.
7. Disables Xbox GameBar / GameDVR, and tunes Win32PrioritySeparation and SystemResponsiveness for foreground-app priority.
8. Generates autoexec.cfg and disables Fullscreen Optimizations for CS2, if the install was found.
9. Displays a summary and, on confirmation, launches Counter-Strike 2 through Steam - boosting its process priority shortly after launch.

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How To Use

1. Download

Download the latest:

CS2_Hybrid_Optimizer.exe

from the Releases section.

2. Run as Administrator

Right-click:

Run as Administrator

Administrator privileges are required for cache cleanup, registry tuning, and Defender configuration.

3. Select Language

1 - English
2 - Russian

4. Wait for Optimization

The native C engine and Python layer will:

• Clean caches
• Purge the RAM standby list
• Tune system-level scheduler and timer settings
• Prepare the operating system
• Remove obsolete shader data

5. Launch Counter-Strike 2

At the end you will see:

Launch Counter-Strike 2 now? (Y/N)

Input	Result
Y	Launch CS2 with optimized settings
Enter	Launch CS2 with optimized settings
N	Exit application

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Requirements

Requirement	Version
Operating System	Windows 10 / 11
Architecture	x64
Steam	Installed
Counter-Strike 2	Installed
Permissions	Administrator

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Safety

This project:

• Does NOT inject into CS2
• Does NOT modify game memory
• Does NOT hook VAC-protected modules
• Does NOT alter game files
• Works exclusively with Windows/Steam cache data and OS-level system settings (registry, power plan, scheduler)

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Tech Stack

Python Layer

ctypes
winreg
multiprocessing
subprocess

Native Layer

C
WinAPI
ntdll
kernel32
shell32

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License

MIT License

Funny Legal Disclaimer

The author is not responsible for:

• Lost competitive matches
• Missed AWP shots
• Random power outages
• Your teammate rushing Mid every round
• Internet provider disasters
• Cosmic radiation flipping a bit in RAM

The software does not modify Counter-Strike 2 memory, game files, VAC modules, or gameplay behavior.

If you get banned, lag, lose ELO, miss a clutch, or your room light starts blinking dramatically during overtime, that's between you, Valve, physics, and destiny.

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Star the repository if it improved your CS2 experience

Made with coffee, Python, and WinAPI.