Same for me. I guess this kind of things are expected to happen with the weekly ?
Newbie question :
My Mi4c bought two months ago came with xiaomi.eu weekly ROM. I only used the Updater app for weekly updates, everything was fine until 6.1.14 which was terrible ( huge battery drain, mobile data and wi-fi problems... ).
6.1.21 did improve, but still there are mobile data and wi-fi problems, battery is also bad.
I now want to roll back to a stable version before 6.1.14, I will try with 6.1.7.
Since I already have xiaomi.eu with TWRP, is it as simple as downloading the ROM, rebooting in recovery, and installing the ROM via TWRP ?