I was playing on the Test Server (which wasn't exactly lag free) and trying to get 9x epic mounts to follow me was a NIGHTMARE.

I didn't toy around with it (and there are probably workarounds) but any server lag and you are toast due to the speed you are moving. Finding lost epic flyers in 3d space is also a nightmare.

I was running 10 accounts on 10 pcs too - so CLIENT lag wasn't an issue as it might be on 1 computer.

My ISPs may have contributed to the lag some - 10 accounts and all - but in laggy areas.... or even sporadic server lag... screwed up epic flyers.