well i use 1200 dpi and 0.8 ingame and never had any negative reaction from the game

Ingame sensitivity is a scalar multiplier. It doesn't discard steps or anything like that, it just makes them result in less angular movement. The source engine's angles to go 6 decimal places (or 9 digits total) so rounding differently wouldn't really be a thing either.

As long as your mouse doesn't add hardware accel at 1600dpi or any sensor accuracy issue like that (which are mouse sensor issues, not a tf2 issue), it shouldn't cause any issues.

I'll be honest, I tried out higher dpi and lower in game sens and it feels much smoother than lower dpi and higher in game sens.

That's also dependent on your specific mouse/sensor.

High DPI is usually smoother, but there shouldn't be a big difference. Check this video.

It's preference, still. some people prefer the snappy feel.

this is the reason mouse companies advertise ridiculously high dpi settings because thats when the sensors exceeds to its highest potential

a lot of times those mice with high dpi's are actually jittery (on their high dpi's)

low dpi just feels better overall, but u shouldnt have any problems tho

I use 0.99 ingame must explain why i am so bad at the game

x

http://www.funender.com/quake/mouse/index.html

According to this if you use a really high dpi with a low in game sens you could experience significiant negative accel.

For example you use 1600 dpi @1920 x 1080, 0.5 in game sens, 200 fps.

cm/360 = 51.9
in/360 = 20.4
Useful DPI = 295
Accel = 0
Neg. Accel at Max speed of 3.048m/s

Change only the DPI to 800 and the sens to 1 and you get.

cm/360 = 51.9
in/360 = 20.4
Useful DPI = 295
Accel = 0
Neg. Accel at Max speed of 6.096m/s

Taking this to an extreme at set a mouse to the DPI of 12000 with 0.07 ingame sens and you get

cm/360 = 49.4
in/360 = 19.4
Useful DPI = 309
Accel = 0
Neg. Accel at Max speed of 0.4064m/s

Which would make playing really inconsistent.

Keep in mind, negative mouse accel (the inherent kind being talked about there) is when your mouse goes so far in one frame of tf2 that it actually hits the edge of the screen. Anything less than that and it's not an issue, since tf2 resets the mouse position to the center every frame. If you were running multiple monitors, and clicked during one of those sweeps, you'd be effectively alt-tabbed. In other words, if tf2's fps is 200fps, you'd need to be moving your mouse over half your screen in 5ms (on your desktop where tf2's sensitivity setting isn't factored in, but still 6/11 windows sensitivity with no mouse accel).

Something like this vid happening (except that's due to sensor issues, not due to screen-distance issues). Unlikely to result in a full stop unless you stop moving at just the right time, but you'll definitely feel it if it's there.

Of course, you can hit it for sure, and if you do you should lower your dpi down some. But unless your DPI is really high you should only hit it when you're turning around and never when aiming, so it'll break your rhythm but won't fuck up your shots. And a mouse sensor (especially laser mice) can still come with hardware negative accel, which is the bigger issue to look into I'd say.

tldr: don't use extremely high values for dpi, but anything low enough that you wouldn't hit the edge of your screen in a single frame (without tf2's sens factored in) is fair game.

Another good video on this topic: https://www.youtube.com/watch?v=jss9Zo37MCQ
Most of the time you probably won't see any difference, but higher dpi might help for small movements (e.g. sniping). But I guess it also depends on the sensor you are using. Just test both sens, like in video above and see if you can notice the difference, also check if you get more accel or decel on higher sens



The only reason I use 1600 is because apparently the Mionix Naos 7000 functions best with it

if u use <1 and u dont have dpi buttons 1.6 will fuck u over cuz it doesnt go below 1
thats about it