I would hypothesize that Ithkuil would be spoken fairly slowly similar to Cantonese and so yield a similar bit rate in line with the overall results for natural

I would hypothesize that Ithkuil would be spoken fairly slowly similar to Cantonese and so yield a similar bit rate in line with the overall results for natural languages. That said, nobody speaks Ithkuil fluently enough to test this so maybe I'll be proven wrong some day!