As the game progresses it becomes more and more difficult to perform this task. UI Lag.
If someone knows please state what changes have been made to FAF to create this problem.
Please make suggestions about the possible origin of this problem.
Please share your knowledge about the underlying game mechanics about how the game handles unit selection and cursor state.
Granted my ui lag battle is nearly solved with all the various small fixes, but there appears to be an underlying issue.
Something about memory management, something about a table of units not being updated fast enough, and what are the possible culprits for this.
a corollary to this is: give order, deselect too fast, order lost. This happens especially for factory orders