I am using Visual Studio Professional 2017 15.2 (26430.14) and my CPU is between 40-60% on my PC everytime I am writing code. It is really anying since it creates a lag for every character input. Sometimes several seconds. I should state that my PC is not of the most performant kind, but I do have SSD and 16 GB of RAM.
I have Resharper and NCrunch installed, but I have tried to disabled them, but without any result.
The process that spikes the CPU is:
And also sometimes:
The cause of my problem was something called "CodeLens" (https://msdn.microsoft.com/library/dn269218.aspx). This is some kind of realtime analysis of the code giving you references and usage direct within the code. I guess it was a little bit to hard on my weak machine.
When I turned this feature off my lag disappeared instantly. You can turn it off here:
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