Hey,
after around 5000 lines of code the slow input gets really annoying. CPU1 is at 100% while typing. I already tested several settings/plugins but I still cannot detect the corrupt piece.
An alternative is running the x11 mac port version (see the wiki for installation instructions, but use "codeblocks" instead of "codeblocks-devel") which works flawlessly for me.
Best,
Zillah