Optimization of Adobe Illustrator: acceleration to the first space

I already once complained about the quality of Adobe Illustrator, as a software product. The speed with which this handsome eats system resources is simply amazing! By drawing the first simple figure, you are happy about how fast everything is. But gradually, with each new layer (object, raster or vector effect ...), Illustrator turns more and more slowly and slowly. At first you don't notice it. Then you hope that after rebooting everything will be as before. However, things only get worse.

When I was working on Windows, I had a fantasy - I’ll switch on a Mac and I’ll have Illustrator working quickly and without one mistake. Doubt simply could not be. After all, Macintosh is a platform for designers, and Adobe develops all its products first for this platform. Blessed is he who believes! The brighter the hope, the worse the disappointment.
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Depressive beginning, is not it? However, there are ways to ease our difficult share a little. My today's article is devoted to three simple tricks that will make your work in Adobe Illustrator a little more pleasant and comfortable.

What kind of tricks are there?