A lot was added in the SDK v.2 and unfortunately at least one bug sneaked in along with all the new features. It appears that when users are on a slower network connection version 2.7.0 of the SDK introduced a notable (sometimes really notable) freeze on load.
The issue has been addressed and a new version 188.8.131.52 was uploaded to nuget. Please update the package in your references.
We are very sorry for the inconvenience this caused you!