Every device is great compared to Pocketbooks regarding speed.
But even pocketbooks can be a bit better than with stock settings.
By default KO uses the same waveforms the stock reader is using. They're slow also on PB reader.
IIRC there's a setting to changing waveforms. It is tuned for "max quality", you can try the setting just below that. You'll gain some speed and loose some quality. There're a few more settings but they're, IMHO, utterly unusable.
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