happens to me too sometimes
i have an fk1

mine does this but it points down. im on g403

It's good to hear that I'm not the only one I guess. It's very weird since this has only been happening for like the past month. Up to now, it's been like 4 years since I had something similar happen.

Same here.
Also have an FK1

happens to me when i use a different mousepad from my default one, razer goliathus in this case, fk2

happens to me too on ec2-evo!! i thought it was just from me lifting my mouse up accidentally but if its happening to other people i am now curious :DD

I think this is a pretty common problem with FK mice. (Maybe all Zowie mice, but I'm not 100% sure on that.) It happened on both of the FK-2's that I've used, but it hasn't happened since I got a wired G403.

Cleaning my stuff helped, (q-tip in the sensor, scrubbing my mousepad with soap and water) but it still happened occasionally.

whoops

Nah that's just euro dm aim. Keep up the good work.

i changed my feet on my g403 from default and it started happening immediately after. potentially i scratched the sensor or something?

anyway try clean your mousemat with shampoo/water, qtip in the sensor like jenkins said. most likely its some grit somewhere doing funky things

i changed the lift off distance on my fk2 and it basically stopped happening

What setting did you change it to?

The issue you described is related to the lift off distance of the mouse sensor and/or the max tracking speed of the sensor. If you have a non-solid black cloth mousepad that's clean a lot of sensors don't track properly and will cause either what you have or a lot of noticeable jumping. Another part of what could be going on is that your lifting and putting your mouse back down at a slight angle causing the sensor to suddenly see a moving image with part of the image being closer/further away then the sensor expects a even surface relative to it and registering A LOT more movement than what is actually occurring.

Possible Fixes
1. Clean your mousepad
2. Get a black cloth mousepad
3. Clean the mouse sensor (qtip dipped in water or rubbing alcohol)
4. break the solid black piece of plastic that covers up part of the sensor area if you do this and fuck up that's on you
5. Get a non-zowie mouse

Highly doubtful, you likely have thicker mouse skates than before. Thankfully Logitech makes this a pretty easy fix. Download the "Logitech Gaming Software" and go to the Surface Tuning stuff and Tune your mouse to your mousepad.

It happens to all Zowie mice I've ever seen/used, and if given extreme enough examples basically every mouse will do this. More common with mice with "ultra low" lift off distance and are near the point where the sensor can barely see the surface it's supposed to be tracking.