Increasing the settings here to maximum shouldn't slow the general opearting system down, correct, because this is only and only when the user right clicks a file and selects scan on the context menu?
Correct, setting the "Instant file setting scan" to maximum shouldn't slow down your overall system. It only impacts the speed of the scan when you manually select to scan a file.
Sorry, I didn't notice that the thread in Kaspersky category, I just read the thread directly.
Yes it is as you think, will not affect the performance.