Hi ..
Noticed the purple belts were 240/s .. but the loaders were still at 75/s

https://mods.factorio.com/mod/deadlock-integrations
https://mods.factorio.com/mod/FactorioExtended-Plus-Transport

Thanks for report

Done!

I did a speed check and the mk2 belts appear to be going at the same speed as the mk1

This link will give you a copy of the save file
https://we.tl/t-t1o7ouc6EO

Thanks for the save game file.

It loos like the 1x1-loaders cannot support speed 240 items/second. It's vanilla bug, not mine.

Upd: https://forums.factorio.com/viewtopic.php?f=28&t=81447

[fixed]

what was fixed ? have you been able to get loaders to go faster ?

My bad, I've read what I want to read. It was fixed another issue.