Researchers have timed how practice, mouse sensitivity, frame rate, and arm technique change how fast players hit a target. Ten minutes a day on a flick drill made players faster within days, at every skill level. A mid-range sensitivity and a steady 60 frames a second paid off, a 360 Hz monitor added little over 144 Hz, and on arm versus wrist the studies disagree. Most of these studies tested between 8 and 44 people, so your own numbers settle the close calls.
Aim is a trade between speed and accuracy
In 1954 the psychologist Paul Fitts described the rule behind your flicks: the farther away and the smaller the target, the longer you take to hit it, and the more you rush, the more you miss. Researchers fold speed and accuracy into one number, throughput, measured in bits per second.1
Most of the studies in this guide measured aim the same way. They timed people flicking to targets and clicking them, with no movement, recoil, or opponents in the way. The Aim Trainer runs that task and scores the same trade: targets per second multiplied by accuracy. Flick performance tracks in-game skill, too. In a 2021 study, a flick test built in the Counter-Strike engine separated non-gamers from Counter-Strike players, and players ranked Gold Nova Master or higher from those ranked Silver to Gold Nova 3.2
Before you change anything, set a baseline: run the Aim Trainer five times and note your average. In a 2024 study of 10 FPS players, a commercial aim trainer kept each player’s scores stable across sessions three to five days apart, with the researchers averaging five attempts per round.3 You can test each change below against your average.
1. Practice: train the mechanics, then measure them
Practice on an aim drill made players better in both studies that tracked it. In the 2021 study, researchers split 117 people, from non-gamers to high-ranked Counter-Strike players, into training groups and a control group that played Tetris. The trained players practiced a flick drill for 10 minutes a day. They improved within three days at every skill level, and after five days they had cut their time to kill on the drill by 6 to 9%.2 The players in the 2024 aim-trainer study posted their best scores in the final round of their final session.3
Match results are the open question. We found no published controlled test of whether trainer gains carry into matches, and matches add movement, recoil, and decisions that a trainer leaves out.3 A trainer sharpens and measures the mechanical part of your aim, and matches build the rest.
To use the Aim Trainer as a practice log, hold the conditions steady: same mouse, same settings, five runs at the start of each session. The format never changes, so your trend graph shows whether the practice is working over weeks.
2. Sensitivity: aim for the middle range
Players compare sensitivity across games in centimeters per 360: the distance you slide the mouse to turn a full circle in the game. A low sensitivity needs a long slide, and a high one needs a short flick.
In what its authors call the first user study of mouse sensitivity in first-person aiming, a team at NVIDIA tested 13 regular FPS players at six settings from 5 to 160 cm/360. The players flicked to static targets. Their times bottomed out between 20 and 80 cm/360, and inside that range the differences between settings fell short of significance.4
Source: Boudaoud, Spjut & Kim (2023), IEEE Transactions on Games. We read the values from the paper's chart.
Both ends cost you time. At 5 cm/360 the players took about 25% longer per target than at 40, and their hit rate dropped. At 160 cm/360 they kept their accuracy but took about 16% longer, because each turn needed a long slide. The authors trace the pattern to a trade-off: low settings slow your turns, and high settings cost precision and add corrective movements.4
Pros do lean low. In a 2021 study of 8 professional players and 8 amateurs, the pros set their in-game sensitivity less than half as high and swept about three times as much mousepad, 1,479 cm² against 473.5 The pros disagree with each other, though. Professional settings vary up to eightfold within a single game,4 so copying one player’s number drops you at a random point in that spread.
Changing your setting carries less risk than the muscle-memory warnings claim. The NVIDIA players cycled through settings across a 32-fold range, then returned to their own setting, and as a group they showed no significant loss of speed. The authors encourage players to experiment.4
To find your number, open a practice map, mark where your mouse sits on the pad, sweep until you have turned a full circle, and measure the distance. If you land outside 20 to 80 cm, move one step toward the middle and give it a few sessions before you judge it. The study used static targets and one mouse at 3,200 DPI, so treat the range as a starting point for your own testing.
Run that testing in your game. In a shooter your mouse turns the camera, and the NVIDIA team treats that as a different control problem from moving a cursor.4 A DPI change moves your cursor too, so the Aim Trainer can test that one: five runs before the change, five after.
3. Frame rate: reach 60 before you upgrade
Separate refresh rate from delay and the delay does the damage. In a 2019 NVIDIA study, eight skilled players shot at targets on screens running at 60, 120, 240, and 360 Hz, with delay added to the faster screens so each refresh rate carried the same latency. Refresh rate on its own had no significant effect on flick times. Adding about 30 ms of delay did.6 A faster screen helps your aim because it shows you each frame sooner.
Frame rate counts too. In a 2026 study, 44 players fought through a test shooter at 12 frame rates from 7 to 500 frames a second, on a monitor fixed at 500 Hz. Their scores climbed up to about 60 and held flat from there to 500. Their smoothness ratings kept rising to about 75 frames a second and leveled off after that.7
Source: Tokey et al. (2026), ACM Transactions on Multimedia Computing, Communications, and Applications. We read the 7 f/s value from the paper's chart and added its reported differences for the rest, rounded to the nearest 10.
For a monitor, the clearest measured step is 60 to 144 Hz. In a study of 101 players, switching from 60 to 144 Hz raised shooting accuracy by about two percentage points. Between 144 and 360 Hz, accuracy showed no significant difference, players failed to detect the switch in most conditions, and the measured delay differed by 7.7 ms.8
NVIDIA researchers ran or co-authored all three studies, and NVIDIA sells the graphics cards that high frame rates need. In their own results, the gains stop far below 360.
Lower your graphics settings until your game holds 60 frames a second or more in a busy fight, and treat 144 Hz as the monitor upgrade worth paying for. Past 144 Hz, these studies measured little gain in accuracy or in how smooth the game felt. If you already own a high-refresh monitor, check that Windows runs it at full speed in the advanced display settings, then compare five Aim Trainer runs against your baseline.
4. Arm or wrist: the research splits
“Aim with your arm” is standard advice in shooter communities, and the evidence behind it contradicts itself.
Secrets of Gosu, the 2021 Korean study from section 2, tested 13 popular claims about professional play with motion capture, eye tracking, and muscle sensors. Six held up.5 Arm aiming was one: the 8 pros rotated at the elbow about three times as much as at the wrist, against a ratio of 1.2 for the amateurs. The pros played Rainbow Six Siege, though, and had never played the Counter-Strike game the study used.5
Three years later, researchers from the same group measured the opposite. With a two-sensor mouse that splits wrist movement from arm movement, they found 5 pros used their wrist 20% more than 12 amateurs did. Players leaned on their wrist more as their sensitivity rose and pressed harder on the mouse when they did, and the link between wrist habits and scores held in some players only.9
A 1997 lab study found no winner between the two. Ten adults pointed at targets with each limb strapped into a splint, and the wrist and forearm tied at about 4.1 bits per second. The index finger on its own came last, and the thumb and index finger pinching a stylus together came first.1
Source: Balakrishnan & MacKenzie (1997), CHI. Splints isolated each limb on a drawing tablet; the study tested no mouse.
That study ran on a drawing tablet and tested no mouse grip. Pick your sensitivity first: a low setting puts the big turns on your arm, as it did for the low-sensitivity pros in the 2021 study, and a higher one moves the work to your wrist.5,9 Then let your scores settle the rest. Run the Aim Trainer five times leading with your wrist and five leading with your arm, keep the style that scores higher, and avoid steering with a lone finger.
5. Caffeine and sleep
Two things outside your setup shift your aim from one day to the next. In a 2024 trial with FPS players, about 83 mg of caffeine, one cup of coffee, improved shooting accuracy and reaction time against water, and about 250 mg did no better. The effects peaked 60 to 100 minutes after the dose.10 To see what coffee does for you, run the Aim Trainer before your first cup and again about an hour later.
Sleep loss slows your reactions and brings attention lapses into your sessions. Our guide on how sleep affects reaction time has the measurements, and the caffeine guide covers dose and timing.
Frequently asked questions
Does aim training work?
Yes, for the mechanics you train. In a randomized study, players at every skill level who practiced a flick drill for 10 minutes a day cut their time to kill on it by 6 to 9% within five days. We found no published controlled test yet of whether trainer gains raise match results, so pair trainer practice with matches, where you build positioning and timing.2
What is the best mouse sensitivity for aim?
In the one controlled study we found, 13 FPS players hit static targets fastest anywhere from 20 to 80 cm per 360-degree turn, with no significant difference inside that range. Lower and higher settings were both slower. Pros lean toward the low end, but their settings vary up to eightfold within a single game, so measure your own cm/360 and test inside the range.4,5
Does a higher refresh rate improve aim?
Moving from 60 to 144 Hz does. In a study of 101 players, that switch raised shooting accuracy by about two percentage points. Between 144 and 360 Hz, accuracy showed no significant difference, and players failed to detect the switch in most conditions. A faster screen helps by cutting delay, so hold a steady 60 frames a second or more before you buy one.6,8
Should I aim with my wrist or my arm?
The research splits. In a 2021 study, 8 pros rotated at the elbow about three times as much as at the wrist, and a 2024 study from the same lab found pros used their wrist 20% more than amateurs. In lab pointing tests the wrist and forearm tied, and the index finger alone came last. Settle your sensitivity first, then compare both styles on your own scores.1,5,9
Sources
Balakrishnan, R., & MacKenzie, I. S. (1997). Performance differences in the fingers, wrist, and forearm in computer input control. Proceedings of the CHI ’97 Conference on Human Factors in Computing Systems. yorku.ca
Toth, A. J., Ramsbottom, N., Constantin, C., Milliet, A., & Campbell, M. J. (2021). The effect of expertise, training and neurostimulation on sensory-motor skill in esports. Computers in Human Behavior.
sciencedirect.com
Rogers, E. J., Trotter, M. G., Johnson, D., Desbrow, B., & King, N. (2024). KovaaK’s aim trainer as a reliable metrics platform for assessing shooting proficiency in esports players: a pilot study. Frontiers in Sports and Active Living.
frontiersin.org
Boudaoud, B., Spjut, J., & Kim, J. (2023). Mouse sensitivity in first-person targeting tasks. IEEE Transactions on Games.
research.nvidia.com
Park, E., Lee, S., Ham, A., et al. (2021). Secrets of Gosu: Understanding physical combat skills of professional players in first-person shooters. Proceedings of the 2021 CHI Conference on Human Factors in Computing Systems. dl.acm.org
Spjut, J., Boudaoud, B., Binaee, K., et al. (2019). Latency of 30 ms benefits first person targeting tasks more than refresh rate above 60 Hz. SIGGRAPH Asia 2019 Technical Briefs .
research.nvidia.com
Tokey, S. S., Boudaoud, B., Kim, J., Spjut, J., & Claypool, M. (2026). Effects of frame rates up to 500 Hz on first person shooter game players. ACM Transactions on Multimedia Computing, Communications, and Applications. dl.acm.org
Toth, A. J., Kim, J., Spjut, J., et al. (2026). Monitor refresh rate impacts FPS video gamers’ perceptions of display “smoothness” and target acquisition performance. Social Sciences & Humanities Open.
sciencedirect.com
Kang, D., Kim, N., Kang, D., et al. (2024). Quantifying wrist-aiming habits with a dual-sensor mouse: Implications for player performance and workload. Proceedings of the 2024 CHI Conference on Human Factors in Computing Systems. dl.acm.org
Rogers, E. J., Trotter, M. G., Johnson, D., Desbrow, B., & King, N. (2024). Caffeine improves the shooting performance and reaction time of first-person shooter esports players: a dose-response study. Frontiers in Sports and Active Living.
frontiersin.org
Set your baseline
Run the Aim Trainer five times, change one thing, and run it five more. Your trend graph shows what the change was worth.
Test Your Aim