I’m frustrated

NDX 500 and 400 won't keep the same BPM

After purchasing the NDX 400 I was irritated that it kept changing BPM throughout the track. these are songs I have never had problems on other players. The player was second hand so I thought it may be an issue with that device.

I have now Baught two BRAND NEW NDX 500's and they do the same thing.

Even when auto detect is off the song will adjust by itself making it impossible to beat match. Verry dissapointed!

Is there a way of saving info in the ID3 tag so that the players dont have to change the BPM?
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