OP speed is inconsistent.
Don't start up with this kind of argument; Part 1 Naruto and Sasuke were able to keep up with Haku's speed whereas later they had problems against speed of sound attacks.
Apart from that, Katakuri is that fast: Katakuri has relativistic with light speed reactions; far superior to the Akatsuki members, even Itachi and Nagato are slower than him.
Furthermore, due to Katakuri's CoO, his precognition allows him to see several seconds into the future, allowing him to see entire moments whatsover his opponents are doing.
I'm taking those stats from a site which does justice on both Naruto and OP when it comes about their feats.
Some characters dodge lightning but can’t catch up to a dude running at 200 km/h.
True, that's an inconsistency; they are far far far far far far far far faster than 200km/h.
I doubt that OP characters are as fast as you think they are.
I doubt that Naruto characters are as fast as you think they are.
I can literally use the same argument, dude...
It would take a lot longer for Katakuri to summon enough mochi to suffocate Kisame.
Why?
His hands touch the ground -> the environment turns into mochi -> he freely controls that amount of mochi -> spams it towards Kisame.
It didn't take long for Katakuri to use his awakening to 1) interfere Luffy using Bound Man and 2) spamming huge amount of mochi trying to suffocate Luffy.