Indeed there is:
Removed. Please don't post non-TSO links.
Adobe Flash is notorious in proff. IT communities for it's many security issues, and also for it's frequent performance issues (and this goes for both response times peaking, locally and to the server in Flash based online applications, and in terms of power consumption). It was the main reason why Apple refused to support Flash content on their iPhones and iPads => battery drained in no time).
So for the long term perspective, I fully support the suggestion to BB in other threads here on this forum, that TSO makes a transition to HTML5, hopefully in a not too distant future. Many other browser based MMO games have already made that transition, and I suggest BB to take this under serious consideration, because these problems with Flash can only be remedied to a limited extend. The Flash technology needs a serious overhaul, and that effort is not within BB's control.