Fastbook chapter 5 - run performance way worse than documented

[jimmiemunyi]

Performance degradation between fastai 2.2.5 and 2.2.7

I’ve just upgraded fastai to 2.2.7 from 2.2.5 and noticed a huge change in performance. However, by looking at the changelog, nothing important has changed between the two versions. Here is a notebook showing the difference. But basically, the exact same code goes from 93% accuracy down to 47%. Have anyone noticed something similar ? @muellerzr any idea of what’s going on ?

is this related to this thread?