Input latency—the elapsed delay between your physical mouse click or movement and the engine rendering the response on screen—is one of the most critical mechanical factors in tactical FPS games. With modern high-end gaming mice supporting polling frequencies of up to 8,000Hz (0.125ms reporting interval), understanding how Valorant handles raw mouse packet data is essential for competitive optimization.
What is Raw Input Buffer?
Historically, PC games fetched mouse input data by polling standard Windows User32 API messages. This traditional pipeline processes input through Windows desktop hooks, applying potential acceleration curves (such as 'Enhance Pointer Precision') and buffering inputs through the OS window manager. In Valorant, enabling 'Raw Input Buffer' bypasses the Windows OS input message queue entirely. The Unreal Engine 4 render thread hooks directly into the Windows Raw Input API (WM_INPUT), fetching hardware interrupts from the USB controller as fast as your device emits them.
1000Hz vs 4000Hz vs 8000Hz Polling Rate Math
Mouse polling rate refers to how many times per second your mouse hardware reports its X/Y coordinate delta to your computer processor:
- 1000Hz: Reports input every 1.0 millisecond (1000 reports / sec)
- 2000Hz: Reports input every 0.5 milliseconds (2000 reports / sec)
- 4000Hz: Reports input every 0.25 milliseconds (4000 reports / sec)
- 8000Hz: Reports input every 0.125 milliseconds (8000 reports / sec)
While moving from 1000Hz to 8000Hz saves 0.875ms of input delay on paper, the true benefit lies in frame alignment. At 360Hz monitor refresh rates (where each visual frame lasts 2.77ms), a mouse polling at 8000Hz guarantees that every single rendered frame receives 22 distinct positional updates, resulting in dramatically smoother micro-adjustments.
CPU Overhead & Thread Stuttering Warnings
Processing 8,000 hardware interrupts per second creates significant CPU overhead. If your CPU has weak single-core IPC (such as older processors), running 4000Hz or 8000Hz polling without Raw Input Buffer enabled can cause severe FPS drops and micro-stutters during rapid mouse flicks. Always ensure Raw Input Buffer is ON when using polling rates above 1000Hz.
Step-by-Step Optimization Protocol
To ensure your mouse input pipeline is operating with absolute minimum latency, follow this multi-step tuning protocol:
- 1. Open Windows Control Panel > Mouse Properties > Pointer Options. Set Motion speed slider to slot 6/11 (1:1 scaling) and UNCHECK 'Enhance Pointer Precision'.
- 2. In your mouse companion software (e.g. Razer Synapse, Logitech G HUB), set your hardware polling rate to 2000Hz or 4000Hz if using a modern CPU (e.g. AMD Ryzen 7000/9000 series or Intel 13th/14th Gen).
- 3. Launch Valorant, navigate to General > Controls > Mouse, and toggle 'Raw Input Buffer' to ON.
- 4. Verify stability in the Practice Range by executing rapid 180-degree swipes while monitoring frametime graphs for any micro-stutters.