Yes, same issue. I have load times of at least 3 minutes for the main dashboard.
It occurs since that "lazy loading" functionality was introduced, which makes the whole lazy loading thing quite pointless. Maybe it was intended to have faster startup times, but as we're loading the main dashboard after startup, so now it still takes long to startup. And what's worse: it now also takes 3-5 minutes just to return from a job to the main dashboard, or to refresh a dashboard. Which makes jenkins unresponsive and even rather unusable. PS: no I have no nest view plugin.