Unreal Editor 4 Freezing/Crashing/Memory Issues

Let me just say that I love working in Unreal 4. However, quite recently I’ve been getting these ridiculously long freezes from Unreal 4 after doing things as simple as going from working on a blueprint to clicking on an item in the 3d viewport. I get frequent freezes, most of which last around 4-6 minutes long very often. Also, I periodically get very long freezes that I’ve had last up to 20 minutes and where it slowed my computer down to a crawl and freezing it sometimes. Sometimes it willc rash after the longer freezes, sometimes it recovers. I’m assuming it’s using too many resources and sure enough, if I open up task manager I’ve seen Unreal 4 hogging a whopping 13 gigabytes of memory before during one of these long freezes. It will go up the 13gb and then back down to 80mb and up and down again for a long time. I haven’t gotten a SS of it using 13GB, but I do have one of it using over 11gb of ram. That can’t be right.

MY PC specs are : i7 4770k, GTX 970, 16gb ddr3 ram @1866
Unreal 4 is pretty much unusable to me in this state and it definitely wasn’t like this when I started. Any possible solutions other than trying to reinstall the editor? Anything I could have done accidentally to make it act in such a way?