I didn't have time to read the whole thread yet, but I just wanted to post that in my first match sometime before level 6 or 7 all 'aoe' graphics effects disappeared from the screen. I could no longer see damage or stun producing zones on the screen. This was most noticable as my Heimerdinger turrets were all simultaneously taking damage, and my health bar depleting.
As heimerdinger I could not see where my Flash Bomb was landing, making target timing even more difficult, as well as not noticing when my health was being drained by a damage zone, put me at a significant disadvantage for feeding.
THIS IS A SIGNIFICANT BUG, you should get this fixed immediately.