My Drumtrax only has tempo increments of 2: 134, 136, 138, etc. The only way to get it to play in time afaik is to sync it.
Further, clocks on old drum machines and sequencers can be very dynamic. A tempo reading of 134 may swing back and forth and even drift. Not at all like some of the very accurate modern clocks.
Believe it or not, this feature can be an asset. Some people go to great lengths to shift their quantized notes a little to each side to make them sound more organic. The Drumtrax does it naturally, and after you write everything, with a little ingenuity you can use the drumtrax as a master clock to breathe life into some otherwise sterile & robotic arrangements.
One great way to do it is to record the tape sync signal first, and then sync all of the sequences you want to track to the recording. This sort of thing is very subtle, but people often forget that the ear is very sensitive to these sorts of subtleties, and they can make a big difference in the way the finished track sounds.
This looks like a psychotropic reaction. No wonder it's so popular...