UPDATE: 2025 Okay I have been struggling with this for years and never know a fix for it until now. In the bottom left corner of the screen where it displays the document size. I noticed that it was updating as I was backspacing.  It hit me like a bolt of lightning. Of course! It was lagging because of the calculation (3mb), so don't come in here saying my file was too big :p. Clicking the little arrow to the right and chaning it to selected too, anything other than document size has fixed the issue. I can backspace and delete and write and press spacebar as much as I like, without an issue. I hope this helps someone else!!!! ~~~~~ Should I work for Adobe? ... View more

I am having this issue as well. Still not fixed as of 2024 FEB. I have noticed a correlation between file size. Any document over 15mb/200M and it seems to begin this text lag situation. It struggles to arrow key through text & even deleting text with backspace gets stuck on a chartacter and just won't delete. The only work around seems to be doing operations slowly ei; Pressing backspace with at least 1-2 sec inbetween each character almost as if you need to give it time to think...? ... View more