To some it might. I'm shooting an Exocet at 291 fps, but it's capable of 330 fps, I just don't like the bow set up to get that. Last year, I had an Emax similarly tuned down to 330 fps and got string jumped twice, once at 32 and the next evening at 35. Both were my fault, the scrawy spike at 32, I aimed mid body and even though I held as low as my nerve would allow on the doe at 35, she got under it w/ plenty of room to spare. The point of all of this is, I'm going to get em close enough it really doesn't matter, so 20 fps is gonna have to be your call. There's lots of deer taken every years w/ bows at lower speeds than those/mine/yours. I'd go w/ the fit.