IMO you need to find a happy medium between speed and quietness. I have only crono'd one bow and that was 20yrs ago. There could be other ways to increase arrow speed. Like lighter arrow weight increase draw weight and increase draw lenght. Your openning statement didn't give enough info to the story like what is your draw lenght, arrow weight. I personally like a bow that is quiet and slower with a longer brace ht and a 36-38in axle to axle which means a more forgiving bow but means you have to be able to judge yardage better. The shorter brace ht bow with shorter axle to axle bows are less forgiving for bow hand torque and some people have a harder time tunning the bow to get it to shoot good. You may be able to tweek your set-up and gain some speed but if it isn't broke don't fix it this close to the season. Take it from my experience. 3-4 years ago I got a new hoyt alphatec just like my 3-d bow but a year newer had it set up almost the same as my 3-d bow. During the second week of november I had the biggerst buck that I have ever had in bow range step out and proceeded to miss the deer at 25,30 and 40yds. Everytime I missed I was able to range the deer and everytime I missed I shot under it. After that deer ran off I knocked another arrow, closed my eyes, drew back, anchored and opened my eye. When I opened my eyes low and behold I was looking over the peep. Last time I ever change something right before hunting season. I should have stayed with what worked if I had I would have been holding a 180-190 whitetail in my hands.