For anyone who is experiencing mind-numblingly slow typing in the code view, just a note that I was able to solve the problem by rolling back to the previous version.
There are many posts on this topic, some going back almost TEN YEARS (good lord Adobe, can you really not fix such a basic problem with one of your key applications for 10 years?), and they mistakenly suggest doing things like turning of caching, code hinting, etc. None of these make any difference, and frankly the idea that you have to disable program functionality for the software to function properly is ridiculous.
The problem is the software. Different users experience this slow typing bug differently, but if you are experiencing this and you're running the latest version, try rolling back.
We are investigating the issue internally and have found the root-cause of the same.
Please let us know if the below work-around resolves the code view lag issue.