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After having installed "Visual Studio 2012 Update1" some new buttons have been added, but unfortunately Solution Explorer has become incredibly slow. All mouse events on it (click, right click, double-click, on either the toolbar or any item) requires 5-10 seconds before having an answer.

After having un-installed update1 speed returned normal(=immediate).

Maybe one possible cause is one of the new buttons added, maybe "Show on Code Map". Unfortunately I can find no way to customize (remove buttons from) Solution Explorer Toolbar; there is no "Show on Code Map" extension installed. I have no ideas on how to investigate further.

As at least one guy got the same problem (here) maybe someone has the solution or ideas on how to further investigate.

Thank you Stefano

Using: Microsoft Visual Studio Ultimate 2012 Version 11.0.51106.01 Update 1

UPDATE:
Microsoft released Visual Studio 2012 Update 2;
now, with Update 2 installed, everything has returned 'normal speed',
so this question can be considered closed/obsolete. :-)

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  • How large is your solution, how many projects and files? What language(s) is it using? – Ade Miller Mar 29 '13 at 17:48
  • It is always good to start from disabling extensions you have installed. After this you can try to launch devenv.exe /resetsettings (this will reset settings in your IDE, so if you have specific one, save them first). – outcoldman Mar 29 '13 at 18:42
  • Solution has vb.net and C# projects. A total of 95 projects. – Stefano Di Paolo Apr 10 '13 at 13:47
  • @outcoldman: The installed extensions are: Microsoft Web Developer Tools, Nuget Package Manager, Visual Studio 2012 Color Theme Editor, Visual Studio Extensions for Windows Library for JavaScript. A strange but positive behaviour is that Solution Explorer events are becoming **each day quicker** ! So in a month the problem may become irrilevant; from the day I asked the question the NuGet Package has been updated and maybe this makes the difference ! – Stefano Di Paolo Apr 10 '13 at 14:00
  • Try my advice in [the following answer][1], starting with removing an *.suo file. [1]: http://stackoverflow.com/a/19277877/90475 – GregC Oct 09 '13 at 18:17

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