Up until the other day my Auto CAD 2015 was working properly with no errors. Recently though it has started to freeze any time I try to make a modification to a drawing. It doesn't matter if it is just adding a line or copying part of a drawing to make a duplicate. I have to go and use windows task manager in order to shut down Auto CAD or let the program sit for about a half hour or so for it to work. Any advice would be greatly appreciated.
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