1. Bugs/Issues I found with this Version of ROM:
1)Cast doesn't work: When I connect to a cast device, the phone soft reboots.
2) Whatsapp Camera doesn't focus on close objects. This becomes an issue when trying to login on Whatsapp Web. Temporary fix is increasing the size of the whatsapp web page.
Same is the case with Xender App.
3) Gcam Latest for Rn7pro doesn't allow me to take photos, it simply says memory not sufficient. I had to use an earlier version of the same.
*) Can't flash ANX Camera. Ends with error 1. (Tried with TWRP and version from ANX website. Don't want to root or flash Magisk at all.)
Update: Installed 127(an older version) and ANX Camera works perfectly. The 48MP from the official website too.
P.S- I only tried flashing with Magisk.(Yes, I finally flashed Magisk. ) After flashing I saw that Google Pay, Phone Pay, BHIM UPI work perfectly.
4) Since this issue existed with the device I am not sure if it's Lineage or the device itself or it's latest firmware which are still causing Video Frame Skips, in ANX, Google Cam, Open Camera (default settings). Since I was on 13th version and this issue was fixed with 12th (For many, not for me), I am still not sure why it's existing then. I will update this more.
5) Vibration is too strong.
The reason for so many bugs is that development has temporarily stopped for all Xiaomi devices from Lineage.
2. I am really not sure but do check out other ROM pages in the development page.
3. It is not advisable to keep phone charged overnight but if you do wish to I suggest using a laptop or pc to charge or a 5A 0.5mA charger to charge the phone.
Also since you mentioned you will use root there are apps which disable charging till it drops to a certain percentage. But I will update you on how much time it takes the phone to charge on this rom with net on and with 2Amp charger. I will be using AccuBattery for it.