Visual Studio Tools 2.2.0 slow when starting build on large solution

It seems that there is a major performance issue with version 2.2.0. This occurs mainly on large solutions in my opinion. I have a solution with 163 projects in it, when I start building the solution, the devenv.exe process will hange for up to 50 seconds before actually starting to build. It will take 15/40 % cpu load.

When I disable the Qt Visual Studio Tools extensions, building starts instantly.

It also occurs when there is nothing to build, Visual studio will hang for 50 seconds before reporting that everything is up-to-date.

The problem also occurs with 2.1.2, but at least that seems a lot faster (about 3 seconds before starting to build).

All PC’s at my company are expiriencing this lag since the automatic update.

I'm also noticing a major increase in memory usage. With 2.1.2 devenv.exe uses 489.0 Mb when doing nothing, with version 2.2.0 it's 1206.932 Mb