Windows 鼠标灵敏度
Source: Mouse Settings - Liquipedia
Pointer Speed is the Windows option that scales individual counts from the mouse to on-screen cursor movement, represented by the String value MouseSensitivity in the Windows Registry. Windows has 20 mouse sensitivity levels. At the value of 10 (middle notch in Control Panel), the multiplier is 1 (i.e. for every one mouse count your computer will move the pointer one pixel on your screen). Non-integer multipliers, contrary to popular belief, do not affect accuracy, as the rounded residuals are handled by an accumulator. However, a MouseSensitivity setting of greater than 10 will cause the desktop cursor to skip pixels and slightly reduce its precision.
鼠标速度是一个 Windows 设置，指定鼠标到屏幕光标的移动缩放系数，存储于 Windows 注册表中的 MouseSensitivity 字符串值。Windows 有 20 个灵敏度级别。当级别为 10 时（控制面板滑条的最中间），系数为 1（即在鼠标上的每一“点”移动使光标在屏幕上移动一像素）。和一般看法相反，非整数乘数不会影响精度，因为四舍五入的残数由一个累加器处理。然而，如果 MouseSensitivity 大于 10，屏幕光标则会跳过一些像素并稍微降低精度。
For each MouseSensitivity value from 1 to 20, cursor movement is scaled as follows:
MouseSensitivity 与缩放系数的关系如下：
MouseSensitivity |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Control Panel tick | 0th | 1st | - | 2nd | - | 3rd | - | 4th | - | 5th | - | 6th | - | 7th | - | 8th | - | 9th | - | 10th |
| Multiplier (EPP* off) | 1/32 | 1/16 | 1/8 | 2/8 | 3/8 | 4/8 | 5/8 | 6/8 | 7/8 | 1.0 | 1.25 | 1.5 | 1.75 | 2 | 2.25 | 2.5 | 2.75 | 3 | 3.25 | 3.5 |
| Multiplier (EPP* on) | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | 1.0 | 1.1 | 1.2 | 1.3 | 1.4 | 1.5 | 1.6 | 1.7 | 1.8 | 1.9 | 2.0 |
*EPP: Enhanced Pointer Precision, “提高鼠标精度”