Are you sure?15bps is very very fast. I think the human limit is 17bps at a push. Im not doubting you, but I would love to see video proof of your 15bps in true semi.
I have no idea whether thats possible or not but the average bps that most people achieve consistantly is 11-12Are you sure?
I might sound a total idiot - but with eyes off on my DM8 the ROF is capped at 20BPS and I can hit that a peice of pi$$.
I can post a video if you want.
I'm not trying to brag or anything - just I thought it was quite a common thing to be able to do.
Cheers.