Possible solution for slow code insight in Delphi (2010 at least) from ancient history (dug out by a coworker just now). At first test it seems to help. Summary:copy your library dcu and res files into a directory, put that in your library path instead of the library *.pas files, and code completion (etc) stop digging through them. I don't know (or care) whether this stops code completion jumping into the relevant source file when you CTRL-click.

Possible solution for slow code insight in Delphi (2010 at least) from ancient history (dug out by a coworker just now). At first test it seems to help. Summary:copy your library dcu and res files into a directory, put that in your library path instead of the library *.pas files, and code completion (etc) stop digging through them. I don't know (or care) whether this stops code completion jumping into the relevant source file when you CTRL-click.

http://embarcadero.newsgroups.archived.at/public.delphi.ide/201003/10030912725.html

This is a useful tip that I've never seen before. Sorry if it's old news.
http://embarcadero.newsgroups.archived.at/public.delphi.ide/201003/10030912725.html