UE4 Lagging Bad!

I cant even get anywhere with a project without unreal editor lagging to the point where it just seems to freeze and I’m not sure what the problem is. I mainly have problems when it tries compiling, any help would be great!
Here are my specs:
Nvidia GeForce GTX 750 Ti
AMD FX™-6300 Six-Core Processor
Windows 7

My presumption is that your “compiling” blueprints. From looking at your set up, it’s fairly close to mine, except for 1 item, which is the amount of memory. I’m using 16GB,and there is a real difference between 8GB and 16GB.

When your compiling, go into the task manager (ctrl+shift+esc), and watch to see how much memory is being utilized. My suspicion is that you will see 95%+ of memory in use. This is what I saw, so upgraded to the 16GB, and things got back under control.