Very long processing time, bug or feature?

Not sure if this goes here but new both to Whisper and GitHub so be kind and give a noob benefit of doubt. Had long video meet with this guy. Language norwegian (not nynorsk). To save time on work-up thought I should give Whisper a shot at transcribing the wav file. Ended up taking a good 29hrs! Big file tho, 1hr 19mins or 202 MB. See img. Used ggml-large-v2,bin. Not trying to be critical, just curious if this is bug or feature and if it's down to me running it wrong or something else. Thanks.