imac 27 2013 mouse lags when usb flash drive inserted

Discussion in 'iMac' started by paukivbashne, Jul 14, 2014.

  1. paukivbashne macrumors member

    Sep 16, 2012
    I bet someone had this issue as well
    because i can recreate this issue on every Imac i came along with following combination
    Imac 27 2013 +logitech anywhere mx+lexar usb flash drive
    Mouse starts freezing and lagging horribly
    No spikes in CPU usage
    just the mouse
    Same happens with Transcend usb flash drive when i put in in second usb port
    When i put it in first it works fine
  2. hfg macrumors 68040


    Dec 1, 2006
    Cedar Rapids, IA. USA
    If it is a bluetooth mouse (i.e. magic mouse), there is a known issue with USB 3.0 interference with the radio frequency used by the bluetooth peripherals. Usually it seems the unwanted radiation is due to poorly shielded USB 3.0 cables, but the flash drive could be radiating like an antenna as well.
  3. paukivbashne, Jul 14, 2014
    Last edited: Jul 15, 2014

    paukivbashne thread starter macrumors member

    Sep 16, 2012
    Holy molly
    you are right
    i moved nano receiver further left and as long as i plugin flash drive on the right everything is fine
    so the flash drive radiating some kind of frequency that interfere with radio receiver of the mouse
    ps.My mouse is not bluetooth but regular wireless radio logitech mx anywhere mouse

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