I had something similar happen. Try re-analyzing the track in normal, not dynamic mode. I think there is something up with their dynamic algorithm. I have recreated the issue multiple times with Beat Sync. When the master track hits a breakdown, the BPM often jumps to something crazy, say 122 to 165 which sounds like hell but even worse if you are in the mix with a second track.
BPM randomly changes to 145 after 5.7.0 update
yesterday at an event the BPM was acting really irratic.
Deck A would randomly change its BPM to 145.
This happened a couple of times while i was mixing a track into Deck B and wanted to create an 8 bar loop on Deck A to do so. When I hit the auto loop it , the BPM suddenly changed to 145.
Another time trying to mix a track with Deck A , hit Sync and the BPM changed to 145.
I installed 5.7.0 this week and this is the 1st time Ive used the software since the update and 1st time this has ever happened.
I am using a Windows Laptop and Pioneer DDJ SX2
@Ajay > I'd need a bit more information to determine the cause - it's a bit unclear as to whether you had sync enabled before the loop was created, what the BPM was originally, etc.