Super slow with multiple art boards
I have 8 dartboards with quite simple (ai-generated) icon style drawings. And now Illustrator is extremely slow. Every edit takes seconds. I already ungrouped the art from the ai-variations, so it's just ordinary Illustrator artwork, but still a lot of lag.
Pasting the contents on one big new document with one dartboard restores the editing speed, so my conclusion is that Illustrator gets slow when using multiple art boards. Hopefully a solution is found, since dartboard can be handy for some projects.
Illustrator 28.8.1
Mac Studio M3 Ultra / 256 GB RAM / 4 tB SSD / Sequoia 15.4

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Jan - Is it possible for you share a file with us on sharewithai@adobe.com? Do mention the subject and link of this post in your email. Thanks.