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Overlooked reason for debug step slow-down in Visual-Studio

, 24 Jan 2013
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If your VS debgger is running slow and you checked out all other tips with no help - maybe you unchecked this one and forgot to recheck it after you were done.


In this short tip I want to note a hard-to-find (for me) reason for Visual Studio slowness in debugging.


Visual Studio has a great debugger - but some things make it go really slow. I won't cover all the top google search results for this... Those tackle problem caused by slow pdb files (e.g. ones on a network drive), by managed code issues, by debug-window evaluations, by exceptions and debug/trace points etc.

It took me time to find it - but for me the slowness was caused by having Tools->Options->Debugging->General->"Require source files to exactly match the original version" unchecked. I just ticked it back and now the step-over speed is back to normal.

What's interesting is that I couldn't find a single reference to this on the web - even after finding the solution. I wonder how many people experienced this...


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Itai Basel
Software Developer (Senior)
Israel Israel
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Comments and Discussions

Question"Show threads in source" (in debug ribbon) also slows down debugging in VS2013 PinmemberFBirth9-Jan-14 8:26 
GeneralGreat find !! PinmemberMrDRamos3-Oct-13 8:44 
GeneralRe: Great find !! PinmemberItai Basel5-Oct-13 9:16 
QuestionThank you for sharing PinmemberStefan_Lang20-Feb-13 22:15 
Questionwhere is this setting? PinmemberJoseph Ortiz27-Dec-12 10:12 
Can you please tell me where I can find this setting? I'd love to check to see if it improves responsiveness. Smile | :)
AnswerRe: where is this setting? PinmemberItai Basel27-Dec-12 18:37 

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