Great work, and no need to apologize, your English is fine!
Unfortunately, I have been unable to conclusively reproduce your findings. I've concentrated on the notification panel memory consumption because it also happens in CM and it's something...
Have you tried this TWRP
Flash this twrp-recovery
Wipe first four in advanced wipe 3 times
Do a Factory reset 3 times
Alternatively you can have Tasker force manual sync, at the exact time and intervals you desire. If coincided with Google sync, it is much more efficient and energy saving.
I vote for temp removal of Pdroid for now
Did you get it fixed? I have the same but latest blu_spark TWRP...
tried without locking but still backups fail with the error code 255 :crying:
I "fixed" it by going with codeworkz TWRP , and with 9.1 instead of 9.2 rom instead. Always been o...