C:B is very slow to open file

[Kaijun]

I want to use C::B (12.11) as code editor in linux. Maybe there are many files in my project, I found it takes a long time to open a file. Sometimes, it takes 99%+ cpu time.

[oBFusCATed]

Disable Code Completion.
Post an example project or use a debugger/profiler to tell us where in the code the slowness happens.

[MortenMacFly]

Disable Code Completion.

In addition you might want to try to cheat with the editor's character encoding detection settings.