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external keyboard cursors do not move the screen directly
when using an external bluetooth keyboard and typing the cursor down on the last line currently shown at the screen it takes some time until a few more lines are shown.
It can't be the update speed of the file as sliding with the fingers works great. Just seems like some timeout to be removed when using external keyboards.
Customer support service by UserEcho
The cursor movement happens instantly, but the the scrolling happens after a very short delay. This is not only when using external keyboard, but also when you move the cursor with your finger.
I'll consider improving the behavior.