I have been using R# on a large (10k types, 100 projs) project for many years without feeling any performance problems unless the files are thousands of lines. I don&#x27;t use the &quot;full solution analysis&quot; though. Unresponsiveness is common for example when reloading projs after fetching new code from version control, but I never attributed that to R#<p>Should add that this is a vanilla C# sln, there is no C++, no web projs etc. Just C#. That could matter.