Delphi: How to organize source code to increase compiler performance?

Some things that could slow down the compiler

• Redundant units in your uses clause. See this question for a link to CnPack.
• Not explicitly adding units to your project file. You’ve already seem to have covered that.
• Changed compiler settings, most notably include TDD32 info.

Try to get rid of unused units in your uses clause and see if it makes a difference.