Started this morning unplugging my IPP (12.9 G2) and within 10-15 minutes sporadic touch failures started. By the end of the first hour failures accounted for almost half of the touches / swipes. This also applies to multi-finger touches.
Plugged in pencil - no change.
Turned off BT - no change.
Plugged in pencil and rebooted - after 45 minutes all is working well.
I am going to leave the pencil in for several hours today (battery willing) and see what occurs.
If someone has a scenario they would like me to try let me know. I will if I can.
Note: my IPP is attached to an ASK. This is my normal mode of using it.
Update: After seven hours I am finding leaving the pencil plugged in helps but it does not fix the issue. I am still getting sporadic instances of touch / swipe failures.
One interesting note; althogh the Pencil is the only BT item active, twice during the last seven hours my iPad asked for permission for the Pencil to connect via BT.
Strange time.