Setup and ergonomics
Your desk sets the ceiling on your sensitivity. Your chair sets your shoulder position, which sets your forearm angle, which sets how precisely you can move. None of this is on a specification sheet, all of it is free to fix, and it is where the largest untapped improvements usually are.
The physical layer, in order of impact
- Desk width available to your mouse. Sets the slowest sensitivity you can execute.
- Desk and chair height. Sets your forearm angle and whether your shoulder is loaded.
- Keyboard position and angle. Determines how much of that width your mouse actually gets.
- Monitor height and distance. Mostly a neck question, partly a scanning arc question.
The upgrade order
If you want the site's argument in one page, read the upgrade order: what to fix first, why, and where the ranking does not apply.
Your desk sets your sensitivity, not the other way round
People choose a sensitivity and then try to execute it in whatever space they have. That is backwards, because space is the hard constraint and sensitivity is the adjustable one.
Measure the clear horizontal distance your mouse can travel before hitting your keyboard on one side or leaving the desk on the other. If that is 40 cm, anything slower than about 36 cm per 360 involves lifting mid-turn, which means every subsequent correction starts from a hand position you did not choose. See desk space and pad placement and the pad size calculator.
The free changes, and what each one fixes
| Change | Fixes | Detail |
|---|---|---|
| Move the keyboard left and rotate it 15 to 30 degrees | Returns 10 to 20 cm of width to your mouse arm and un-twists your left wrist | Desk space |
| Raise the chair until your forearm is level with the desk | Removes the shoulder elevation caused by a standard-height desk | Desk height |
| Drop the monitor so its top edge is at eye level | Neutral neck position instead of sustained extension | Monitor position |
| Start with the mouse left of centre on the pad | Gives you the full sweep in the direction you actually have room for | Pad placement |
| Lift the mouse cable clear of the desk | Turns a variable force acting on your mouse into a small constant one | Cable management |
The consolidated version of all of this, including the software settings, is the settings checklist: about twenty minutes of work in total.
Fatigue is an ergonomics problem, not a gear problem
If your aim is noticeably worse in hour three than in hour one, that is a fatigue signature, and it points upstream of your mouse. A movement produced by a relaxed, supported forearm is more repeatable than the same movement produced by a shoulder holding position against gravity, because the muscles doing the fine control are not also doing structural work. See desk height and posture for the diagnostic table.
Every guide in Setup & Ergonomics
- The upgrade order: what to fix first, and whyA ranked framework for improving a competitive setup, ordered by effect size per pound rather than by how interesting the purchase is, with the reasoning and the exceptions.Updated September 4, 2026
- Arm vs wrist aiming: the mechanics, not the tribalismWhat each aiming style physically is, the range of motion each joint provides, how to identify which you use, and why almost everyone should use both.Updated September 3, 2026
- Desk height and posture for gamingHow to set desk and chair height so your forearm is supported and your wrist is straight, why a too-high desk is the most common problem, and what to do when your desk cannot be adjusted.Updated September 3, 2026
- Desk space and mousepad placementHow to work out how much space your mouse actually has, where the keyboard should sit, why rotating it helps, and how to lay out a shallow desk for a low sensitivity.Updated September 2, 2026
- Monitor position: height, distance and angleWhere to put a monitor so your neck is neutral and your whole screen stays inside the arc you can scan with your eyes, plus the case for and against monitor arms.Updated August 31, 2026
- Cable management and mouse bungees for aimingWhy a mouse cable is a variable force acting on your aim, what a bungee actually fixes, how to route a cable properly if you do not have one, and the wireless alternative.Updated August 31, 2026
- The competitive settings checklistEvery free setting worth changing, in one place, with what each one fixes and roughly what it is worth. Twenty minutes of work that outperforms most hardware purchases.Updated September 7, 2026