I made few changes to his script, boss will now fly to platform and only then try to attack players. This should ensure that he doesn't get stuck on the mountains.
Let me know if it's fixed when you check (fix will be applied after morning restart).
1.1 - Fixed. Laser fixate trigger was moving faster than expected.
1.2 - Was fixed already.
1.3 - Enabled Back.
1.4 - Tanks are now last in priority to be targeted by this spell.
1.5 - Ranged dps + Healers (except for MW monks) are now top priority to be targeted by this spell.