Deux, I’m using the Mionix Naos which is built upon the same sensor as the Qpad 5K.
I noticed that if I use full DPI (5040) and put down the sens a lot in TF2 I get negative acceleration as you describe.

However, If I decrease the sens in the mouse driver instead (and keep the TF2 sens to 1 or slightly above) I don’t get any negative acceleration. I tested the sens 40 cm for a 360 and tried moving the mouse as fast as I was able to move my hand. Then I got no acceleration at all and everything worked fine.

If your mouse suddenly stops moving when you move it fast enough means you have moved it faster than the malfunction speed. I heard the same problem appears on the G500 with the same sensor.
Strangely enough the problem does not seem to appear on the Naos which also is built on the same sensor.
And it also seems a bit odd that it should depend on the game you play. Then it doesn’t sound like a hardware problem.

tl;dr
Try lowering your sens in the mouse driver instead of in TF2 to prevent negative acceleration.


Last edited by Iller,