I notice something off... Not sure if my unit 15U went crazy or is it Hyper OS3 they tweaked something for this:
https://new.c.mi.com/global/post/1895204
So yesterday I brought my Xiaomi 212W power bank out but left the cable at home.
1) Bought a Valore cable (C to C,100W,5A) it into my power bank was surprised to see 90W Max on the animation
2) Replug it in the same happens.
3) Reached home tried other High Power rate cables with power bank saw 90W
4) Try with my Cuktech charger with hypercharge support same saw 90W with other highpower C to C cables
Really odd i remember for a long time both the cable and port mattered. I don't have another xiaomi device with HOS3 to try though.