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 fre

Answer 1

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))

Answer 2

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.

Answer 3

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.

Answer 4

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.

Answer 5

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.

Answer 6

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