Back in season 2-3 I never EVER had an issue with creepblock at all.

Now along comes season 4-5 and suddenly Creep block is a HUGE HUGE issue.

My advice undo whatever you did to creeps in season 4 and bring it back to season 3 and problem solved. Seriously i just had to flash out of 3 minions surrounding me because my character just stopped moving and accepting any commands because of this shit.