Freedom to type unhindered for multi-line / multi record input.

When typing data into multiple row, such as general journal line, you can enter the value of a field, use down arrow to go to the next record and continue typing without having to wait for the server to respond. This allows you to quickly enter multiple records.

Also see https://docs.microsoft.com/en-us/dynamics365-release-plan/2019wave2/dynamics365-business-central/speed-agility-data-entry

-----

Keyboard input is not buffered / lost in combination with slow data validation

We still face MAJOR usability / performance issues on BC 16 pages where blind / fast data entry is done.
On listparts, the user completes a field value in a given column and navigates to the next row to enter another value. Via F8 / copy paste / manual input / ... upon leaving the cell, the OnValidate code is ran, but is not yet completed, although the user is already inputting data in the next cell and navigating to the next line, resulting in loss of data.

Also see https://partner.microsoft.com/en-us/dashboard/collaborate/engagements/1173/feedback/wits/Bugs/273215