Choppy playback of audiobooks played at "Fast" speed

I have downloaded the latest firmware, but I still have a problem with some audiobook files. They play fine when the speed is set to normal or slow, but when the speed is set to fast they sound distorted or choppy after the backlight goes off. Here’s an example file:\_born\_mfs\_librivox/star\_born\_01\_norton.mp3

Any suggestions as to what I might be able to do to avoid this?



Fuze 8 GB, firmware 01.02.26A, no memory card, about 1400 mp3 files.