In my experience, no other VS extension even begins to affect performance to the degree ReSharper does. JetBrains readily acknowledges the performance issues.

In my experience, no other VS extension even begins to affect performance to the degree ReSharper does. JetBrains readily acknowledges the performance issues. Is there a conflict of design between VS and ReSharper? Perhaps. But that their homegrown IDE build around ReSharper will work faster than VS + ReSharper is a pretty safe bet. Apples and oranges, here.