how to can i make holes about 22000 pieces (in solidworks)
Here is a way I did something, I do not know if its useful to you. And it will probably not be usable for simulation.
Answered with a tutorial: https://grabcad.com/tutorials/how-to-can-i-make-holes-about-22000-pieces-in-solidworks
yeah your computer will work slow too slow because solidworks make the same relations to many times so if you want to do a big pattern it is necessary an excelent computer or make it in parts in the little tutorial ( up, by : MALLIAS ) he makes a pattern of 120 copies of the original so, you can make 2 patterns of 60 copies each one.