Text is very slow for me too on AE 2020... one layer of imported video and ONE line of text. Cache is on a dedicated SSD, GPU enabled... on AE 2018 I did a very complicated text animation with dozens and dozens of lines of text, same computer, everything was fine. On 2020 I can barely type it's that slow. I just timed it at 4 seconds per letter to just type! It's insane, I've just finished a ten minute animated sitcom, all in AE, hundreds of layers, but adding a simple line of text is slowing it down. Generally I've found performance a bit slower in 2020 than I'm used to, but this text thing is ridiculous.
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