InputLag
Tactical ShooterEngine: Source 2

Counter-Strike 2 Responsiveness Guide

Sub-10ms responsiveness for tick-perfect aim.

Counter-Strike 2 runs on Source 2 and uses 64-tick servers by default (128-tick on FACEIT). Its competitive mechanics — tight spray patterns, peeker's advantage, and millisecond-precision entry timing — reward the lowest possible input lag above almost any other title.

Target FPS300–500 FPS
Polling Rate8000 Hz
Refresh Rate240–360 Hz

Optimal Settings

SettingRecommendedWhy It Matters
V-Syncgraphics
OffV-Sync adds one full frame of delay minimum. At competitive framerates, this costs 2–4 ms but makes the game feel noticeably less responsive.
fps_max (console)system
0 (uncapped) or 500Uncapped FPS minimizes frame sampling delay. Capping at 500 provides consistent results without CPU thermal stress.
cl_interp_rationetwork
1Controls client-side interpolation. Value 1 means minimum interpolation (one tick) — best for low-ping players.
ratenetwork
786432Maximum network send/receive rate in bytes per second. Default is too low — increases packet delivery consistency at the cost of bandwidth usage.
cl_cmdratenetwork
128How often the client sends commands to the server. Setting to 128 matches FACEIT tick rate for best registration.
Raw Mouse Inputinput
OnBypasses Windows pointer acceleration. Essential for consistent aiming — without it, sensitivity varies with cursor speed.
Mouse Sensitivityinput
0.8–1.2 (400 DPI)Lower sensitivity (eDPI 320–480) reduces micro-tremor impact on aiming precision. Match to arm-aiming technique.
Multisampling Anti-Aliasing Modegraphics
None or 2x MSAAMSAA adds GPU rendering cost. Disabling it frees GPU headroom for higher and more consistent framerates.
Global Shadow Qualitygraphics
MediumHigh shadow quality significantly increases GPU load and frame time variance. Medium provides playable shadows without stutter.

Responsiveness Tips

Use FACEIT for 128-Tick

Valve's official matchmaking runs 64-tick servers. At 64 ticks, the server processes game state 64 times per second (~15.6 ms per tick). FACEIT runs 128-tick servers — halving server-side update intervals to ~7.8 ms. For players above 1000 ELO, the registration consistency improvement is significant.

Peeker's Advantage Is Real

In CS2, the player peeking a corner has a 10–30 ms registration advantage over the player holding. This is inherent to client-side networking. Minimizing your own local input lag narrows this gap from the holding side and maximizes your advantage when peeking.

Launch Options That Matter

Add -novid -nojoy to skip intro videos and disable joystick polling. The -high flag sets process priority to High. -threads is no longer relevant in Source 2 — the engine manages threading automatically.

Match DPI to Technique

High DPI (1600+) with low in-game sensitivity puts mouse quantization noise into the fractional range, which can cause jitter. 400–800 DPI with sensitivity adjusted for your preferred eDPI is the standard for professional players.

Responsiveness Score

Your Responsiveness Score measures the end-to-end quality of your input pipeline. Use the Responsiveness Lab to benchmark your system, then match your score to the ranges below.

Responsiveness Score Ranges

Elite85–100Optimized setup. Sub-15 ms click-to-photon. Competitive at any rank.
Pro70–84Well-tuned. Minor latency sources remain. Suitable for FACEIT up to Rank 10.
Competitive50–69Several optimization opportunities. Noticeable in spray control consistency.
Needs Tuning0–49Significant latency present. OS settings likely not optimized.

Optimize With the Desktop App

Apply all optimizations automatically. InputLag's desktop app manages power plans, GPU settings, and timer resolution persistently — no manual tweaking.

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