Groove~ object plays back wrong speed in M4L

I'm trying to make a Max4Live patch in Ableton's patcher. The issue is that sending a 1 to the groove~ object causes the audio to playback at a rate slightly over 1. I made sure the sample rates are the same from Ableton to Max. When I use play~ and send it a message of "0,$1 $1" with $1=endpoint in ms, it also plays back slightly faster than the recorded loop.

What could cause this issue?