Hello, recently I stumbled upon a strange moment when developing my project. My app started lagging a lot after some moment. I took a CPU profile in chrome devtools and it turned out a process called getStacktraceWithUncaughtError related to zone js took ~3s. After some playing around with it and after upgrade to angular 4 (from angular 2.4) and zone 0.8.10 the load time significantly decreased. But all the previous versions of zone didn't have the effect. I tried debugging it, but and not sure how to properly debug the execution of this zone js function. No errors are in the console and terminal. Tried to google it, but it seems nobody is facing the same issue. Can somebody of the experts help me with any tip why it might be happening? Any thoughts?