It's amazing, some times, just how fast meat climbs! I did some chuck roasts this weekend for burnt ends. They started at 33°, and climbed to 155° in only 2 hours. Another hour to 177°! Then, they stalled. Hehe. I knew it was coming, and they sat there (even dropped back to 174) for the next 3 hours. Once the stall "broke," they climbed to 195 in just over another hour.
The stall can be disconcerting, if you don't know what's coming! I almost make it a contest, now, to see how fast the climb to the stall is. I think these chuck roasts were my fastest yet!