VS2008 debugging causes slow may have the following:
Too many open files 1. Open only need to keep track of the current file, will immediately speed up fast;
2. Watch, Breakpoint, etc. can be less of it as little as possible;
3. Enable property evaluation and other ... ,关掉
Reproduced in: https: //www.cnblogs.com/MichaelShang/archive/2010/10/29/1864100.html