Edit: Please ignore what I wrote. It's fixed now (didn't saw that you posted 4 hours ago)! Thank you very much!
Thank you.
For testing, I installed Bos's Logistics. His belts run slightly faster (50/s) and your Miniloder can keep up with this speed (no gaps). I don't know why. https://imgur.com/ZhXNqgJ
To fix this in my world I installed the mod Ultimate Belts and I started to use the second tier (the green one) n the input site. https://imgur.com/a/nHY1Bxw
Replacing the loader over and over again did not help. Unfortunately.
Greetings