I have never encountered this problem with KQ6, so I haven’t been able to explore the possible causes or cures. You might see this for possible help with the stick-in-the-mud lock-up. The good news is that there are now new patches for many of the speed bugs found in Sierra games. Patches for LB2 and QfG4 (yes even the the infamous Error 52 bug) and many other Sierra games can be found here:
