Super slow file transfer via OTG and system lag Android 9 So I'm using a new Lenovo TB-8505X with Android 9 and I've tried several file managers and still when I'm trying to transfer files to any of my USB sticks the speed is too slow, like one mb and even gets slower and the system starts to lag, when the transfer is complete the system resumes its normal work! At first it starts to transfer fast, like instantly 10-20% of the file and then it slows down!

On my old Lenovo Tab Essentials with Android 5 everything transfers fast and the system doesn't lag! Why is that and what can be done about it?

I've already tried to enable USB Debugging and all that, to no avail!

Do any of you guys have this problem, seems like a Pie's problem...

Is it even solvable?

Device works flawlessly except for this one problem!

P.S. Doesn't seem like a warranty problem or is it?
Probably the USB OTG adapter.

on some controllers I have to flip the USB around, one side of the USB C runs at USB 2.0 speeds.

The other side will run at 3.0 speeds.

If your tablet has a full USB port - then im baffled. running fast at start then slowing down is usually a sign of write caching. sometimes it doesnt measure the speeds right.