Registry Home > Hardware > Mice and Keyboards

PS2 Mouse Port Rate Adjustment (Windows NT)

Ever noticed how your mouse cursor flickers sometimes or doesn't run as smoothly as you would like? That's because the refresh rate is set too low, modify this key to speed things up and make your mouse cursor move smoothly.

This tweak can be easily applied using WinGuides Tweak Manager.
Download a free trial now!

Open your registry and find the key below.

Create a new DWORD value, or modify the existing value, called "SampleRate" and set it to equal 60 - 200 (decimal), where a higher number means a smoother cursor.

Restart Windows for the change to take effect.

Registry Editor Example
|(Default)REG_SZ(value not set)|
|SampleRateREG_DWORD0x0000003c (60)|
Registry Settings
System Key: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\i8042prt\Parameters]
Value Name: SampleRate
Data Type: REG_DWORD (DWORD Value)
Value Data: 0 - 200 (default = 60)

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Disclaimer: Modifying the registry can cause serious problems that may require you to reinstall your operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk.

Last modified: May 14, 2002