Well, first we have to independently verify whether the speed rollover is even a real thing. Lexmark isn't exactly a trustworthy source of information, and his claim does not line up with what is known about how the speed increments.
I've been meaning to chat with Dean about this -- as he already has savestates set up for some of the later Rounds -- but I haven't seem him online since Lexmark dropped his news.
If the speed rollover can be confirmed, then there is definitely room to discuss new strategy, but if it cannot be replicated, as I expect, then at least we can dismiss any future Lexmark claims.