Before anyone will tell me to L2P etc etc let me just tell you that I have NO issues with movemnt mechanics of my rogue. I am able to avoid most crap on the floor and in the air. On Alysrazor i was flying as i was really quick to get thru all the rings to get maximum buff uptime etc, I am able to avoid all stuff that this game will throw at me BUT:
On Imperial Vizier when we have discs floating around, i DPS and run in circle around the boss - right in the middle of the "free" zone. Yet I am taking ocasional damage when I am nowhere near the discs. After few tries and my getting hit once or twice during each phase I noticed that our DK tank (with DPS offspec in this fights) is running much closers to those discs (closer to boss them I am (and a lot of time runing thru them)) but he is not taking as much damamge. On average pull of 7 minutes and long into the main fight he might be hit once by a disk but I get hit 6-8 times.
On last few pulls I have run much closer to discs and sometimes I was sure i will get damage as i was on the edge of them (those closer to boss), but I had no damamge done to me.
Has enything like this happened to you as well ? When some of my ranged guys told me at first that they are getting damage even when not close to discs i was like "they are looking for excuses" but after checking WoL and seeing that i had on avarage 7 hits by disks when I know I shouldn't get hit even once (on most pulls that is ) I am just not sure.
ps. for those that did BWD, I had a simillar issue on Nefarian when lava filling in the room would spawn much later then actual damage and stacks would start ticking. Only after few weeks Blizzard has released fix for some of the clients with such an issue. I really think that this is a smillilar issue and will do a ticket about it. Lets see what blizzard answer to it is ... hopfully not L2P noob