BotoX

It's definitely not caused by the BMS (as that can only turn the battery ON or OFF) and I did not find any clue in the ESC firmware for this...

Even when driving uphill or accelerating? Because driving straight you don't need more than 300W anyways lol.

https://github.com/BotoX/xiaomi-m365-compatible-bms 35km/h max realistic 12S3P fits with original lid 12S4P needs 5mm - 5.5mm spacer

It's in the README of that GitHub I linked: https://cloud.botox.bz/apps/gallery/s/94drnBJfjacBDnr

https://t.me/XiaomiM365Hacking or here

Yeah, if there was any request :p

Yes that is very well known but I don't use or like the russian algo so I'm not planning on fixing it. For me it's just much jerkier and doesn't...

On 10S the max speed can't be set higher than 30km/h else the problem you are describing appears. The exact reason why it's kinda wonky is not known but the...

I don't think I've heard yet that someone is having issues at 30km/h, even less so with an additional battery. Could you share your firmware settings?

I guess you're going to have to live with that, very faint oscillation at 30km/h sounds normal. That's probably the algo that controls power, it's power = (speed_want - speed_have)...