seems most likely a broken cable, it gets broke pretty close on the start, coz from fast movements it gets bent most of the time so the little cables inside gets broke. i had to open and solder them million times on my g9, then other mouses broke also but was lazy to fix them...u can do as i did soldering but its a complex operation and the hard way...the simple way is to get whatever cheap mouse and take its own cable n put it on urs, should be same cable and compatible anyway but not 100% sure. in other games doesn't happens coz u don't move the mouse too wide and fast, quake is the only game that gives u this issue more often due to the frenetic game style. that sound u hear, its the cables disconnecting and connecting again as u move the mouse, so in windows u hear the sound like plugging and unplugging.

actually to be really sure if its a faulty usb cable or not u might try to move with ur hand left n right the cable of the mouse, from the start of it and then try a bit more to the middle and see if u get that disconnecting sound, checking also if the mouse stops working or not. moving the cable left n right, then up n down makes the little broken cables inside connect n disconnect, so if its a broken cable problem u'll find out this way, otherwise might be some other shit.

wrote:

To Fabio cazzo.

oh balls, u were right ahah problem is u dunno whats that port for for flashing bios over usb stick...woof

Had the same problem before my mouse's cable died.

after 6 years my mouse has died today - a4tech evo oscar x710 xfrie ..
rip