The files app is a joke. Buggy as hell. Seems even worse than one of the early betas, actually.
- UI errors when copying files to/from cards and external disks (progress bar broken, showing multiple instances of files being copied)
- iPad Pro refused to copy a 10GB zip file from an external drive
- Copying large files is very slow (as in I disconnected the drive after 4 mins of waiting for a 4GB file to copy)
- attaching a 128GB micro sd card hangs the app upon attempting to view images in the folder (card is about 100GB full)
on the bright side - Apple pencil seems to be working fine and indeed seems slightly more responsive, even with 3rd party apps (like affinity photo) but I have no way of measuring it -just an impression.