Huge disappointment. Just got an hd500x to use for recording with a windows 8.1 laptop. Experiencing pretty much everything listed in this thread. Select asio in reaper and it appears to work for a minute or so until it blue screens(bad pool header, irql, ect..). I have noticed that if I leave it in direct sound instead of selecting asio it still seems to work as it should and it works a little longer (maybe 5-15 minutes) and doesnt blue screen but reliably experiences an audio lock which requires a reboot to correct. And of course just disconnect the pod and everything goes back to working 100% correctly. Judging by this 3 year long thread with apparently zero response from line 6 I guess I should stop trying to fix it and figure if I should just send it back or spend more money on gear to work around a feature this thing was already supposed to have. First and probably last line 6 purchase. Terrible experience.