In mi.com, Redmi AC2100 only supports 5GHz Channel 36,40,44,48,149,153,157,161,165.
However, in OpenWrt, there are redundant unsupported channels listed.
Please fix it. Thanks!
FYI I am using 120 on my unit, although I do have 5G connection issues (ie 5g radio disabled after hours of usage)
Have you tried using those channels on your unit?