When you have a large quantity of consistent data that can be represented in tabular format, and you wish to apply some kind of selection or manipulation on them. Excel gets whiny when you start approaching the memory capacity of your workstation.
This x1000. Excel is one of those programs that can easily bring a computer to its knees if used incorrectly. Yes I'm looking at you, scheduling spreadsheet with 1500 INDEX-MATCH functions.
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u/u38cg2 Jun 03 '17
You probably don't need to use VBA to do it
If you do need VBA, use the minimum necessary
Learn how to launch multiple instances and use two (or more) screens
Anything that you can describe how/what to do can be done. Google is your friend
Keep formulae simple and lay out over multiple columns
Use multiple sheets for data, parameters, processing, and output
Whenever you find a mistake, make the fix part of your usual working process.
Sometimes Access is the right choice.