Visual Studio 2015 is very slow

Question

I just finished the installation and the whole IDE is super slow  It seems like it s making some kind of heavy CPU calls in the background where the whole IDE literally freezes and becomes unresponsive for about 2-3 seconds   I was not having this issue with Visual Studio 2013 Ultimate  I am running Visual Studio 2015 Professional   Installed Add-Ons Packages    Node js Tools ReSharper   Anyone have any ideas

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After upgrading from VS2013  I found that when debugging in Visual Studio 2015  it would freeze  I unchecked  Tools Options Debugging General Enable Diagnostics Tools while debugging  It brought debugging sessions back to normal  While Diagnostics are useful  I don t need them all the time so if at any point I need them I can turn it back on

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Same issue here  Visual Studio 2015 Pro Update 2 on a brand new machine  The editor was extremely slow  typing like chewing gum   The reason was ESET NOD32 Antivirus 9  It has a thing called  Host Intruder Prevention System  HIPS   enabled by default  I don t know how useful it this  but it can be disabled or I just added a rule  to allow devenv exe   Now it s fine

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This may help someone visiting this question   I had an issue where it was slow only in very large files  When opening braces such as   or after completing a type  such as decimal it would hang   This was resolved by disabling the  Show a completion list after every character is typed  setting in Options    Text Editor    C     Intellisense

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This seems silly but after deleting C  Users  User  AppData Local Microsoft WebSiteCache everything started going fast again  If you re out of options you can try that  It s the only thing that worked for me

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This answer might seem silly but I had my laptop s power plan set to something other than High performance  in Windows   I would constantly get out of memory warnings in Visual Studio and things would run a bit slow  After I changed the power setting to High performance  I no longer see any problem

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I also had this issue with Visual Studio 2015  tried everything I could read about but in the end all that was left was a clean install  I used Microsofts tool VisualStudioUninstaller to get rid of every component   https   github com Microsoft VisualStudioUninstaller  Usage    Extract TotalUninstaller zip Open an administrator command prompt  Execute Setup ForcedUninstall exe Type  Y  to uninstall    After reinstall everything worked normally again  I did not experience lag in every project but one was causing enough pain so I really had no choice   Read about another command that you can also try but I know VisualStudioUninstaller works  at least it did for me   D  vs ultimate exe  uninstall  force   Where D  is the location of your installation media  mounted iso  etc

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I had the same problem with VS 2015 Community with Node Tools    I saw some issues about this problem in the NTVS github repository  and it may related to analysis file in the project  In fact  I have deleted this file every project load and it gets faster  but I think the safest way to improve it is ignoring some directory files like the link below   https   github com Microsoft nodejstools wiki Projects ignoring-directories-for-analysis

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This might just help someone  in addition to what other answers have mentioned   Clear the contents of AppData Local Microsoft WebSiteCache folder   In my case I had VS 2015 pro update 3 and this is what helped me speed up VS

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My Visual Studio 2015 RTM was also very slow using ReSharper 9 1 2  but it has worked fine since I upgraded to 9 1 3  see ReSharper 9 1 3 to the Rescue   Perhaps a cue   One more cue  A ReSharper 9 2 version was made available to      refines integration with Visual Studio 2015 RTM  addressing issues   discovered in versions 9 1 2 and 9 1 3

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I experienced that when downgrading  i e  uninstalling and reinstalling  from VS 2015 Ultimate to VS 2015 Professional  the IDE was very sluggish and constantly froze   Doing a new clone of the repository  or - as one of my collegues tried - cleaning out all files not in source control  in the case of Git git clean -xfd   helped me get rid of the this problem  The IDE is now running smoothly again   The assumption is that Ultimate leaves some files behind that cause this behaviour in Professional  but I have not been able to track down which

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It is most likely because you uninstalled some SQL Server components Visual Studio is using  Though Visual Studio still works  it s very slow    Just go to  Programs and Features  in the Control Panel and repair Visual Studio  The needed Visual Studio components will be installed again and Visual Studio will be back as fast as before

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I had a similar problem  but only on startup   To resolve my start issue   I have removed extensions from Visual nbsp Studio nbsp 2012 for phones   Repair Visual nbsp Studio nbsp 2015 same    uninstall Visual nbsp Studio nbsp 2015  hang  not all removed   Then use   https   github com tsasioglu Total-Uninstaller  Remove all that was possible with Visual nbsp Studio nbsp 2015  Visual nbsp Studio nbsp 2013  etc   Install Visual Studio again error  Lookup logs  inet  etc  and found Visual C   redist 2015  I reinstalled and repaired vc redist x64 exe and vc redist x86 exe   I installed Visual nbsp Studio nbsp 2015 again and now I don t have any startup issues  vsHub can be uninstalled and connected services can be disabled

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If you re suffering due to ReSharper then below mentioned options may help   Visual Studio configuration   ReSharper may conflict with the other Visual Studio addins and extensions - in case of slowdowns  please try to disable the other addins one-by-one and check if it helps to speed up Visual Studio with ReSharper  Here are some examples of known compatibility issues with other addins      Productivity Power Tools      VSCommands      Also  you may try turning off the following options under  Tools     Options   Environment   General   Automatically adjust visual   experience based on client performance Use hardware graphics   acceleration if available   ReSharper configuration   Though ReSharper provides quite a few powerful and useful features  some of them can be tweaked or turned off in terms of improving the speed  Here are some examples      Turn off Solution Wide Analysis  SWA  in  ReSharper   Options   Code   Inspection   Settings    Analyze errors in whole solution  checkbox      Switch back to Visual Studio IntelliSense in  ReSharper   Options     Environment   IntelliSense   General  dialog Clearing caches for   current solution in  ReSharper   Options   Environment   General    dialog   Here are the links    Visual Studio with ReSharper is slow Speeding up ReSharper  and Visual Studio

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In my case both 2015 express web and 2015 Community had memory leaks  up to 1 5 GB  froze and crashed every 5 minutes  But only in projects with Node js   what solved this issue for me was disabling the intellisense  tools--  options--  text editor-- Node js--  intellisense-- intellisense level No intellisense   And somehow intellisense still works

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I found that the Windows Defender Antimalware is causing huge delays  Go to Update  amp  Security -  Settings -  Windows Defender  Open the Defender and in the Settings selection  choose Exclusions and add the  devenv exe  process  It worked for me

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Try turning off the ReSharper Code Inspection from menu Options   Code Inspection   Setting and choosing Visual Studio IntelliSense  menu Option   Intellisense   General  instead of ReSharper IntelliSense will make it much faster

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Try uninstalling either Node js Tools for Visual Studio  NTVS  or the commercial add-on called ReSharper from JetBrains  Using both NTVS and Resharper causes memory leaks in Visual Studio 2015   NTVS   Node Tools for Visual Studio

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Update PC Drivers  In my case  and I had bad lag doing the simplest of things  it helped to update my pc drivers  The system drivers are the foundation for everything   I was fortunate that I have Dell and they have awesome website support to do this  I googled      dell  lt my model name  update drivers   or go to the drivers home page  I let it update all the drivers it wanted to  Dell driver update is pretty much automatic    Much of the lag seems to have gone away

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I have experienced very slow edits with Visual Studio 2015 Community Edition especially while working with HTML  and Razor as well  and JavaScript  I was able to resolve the issue by removing the references in the  Scripts  references js  file of my ASP NET MVC project  Furthermore  I disabled autosyncing in that file by adding this to the top of the  references js file   This solution causes Visual Studio s IntelliSense to not load show all the JavaScript references available  However  ReSharper s IntelliSense will work perfectly fine and fast        lt autosync enabled  false    gt

[visual-studio-2015] Visual Studio 2015 is very slow

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