Constant Hanging! Premiere Pro problems or Windows 10? Can't decide

A couple of things I've noticed, which make using Premiere kind of unbearable, as you don't know when it will decide to stop working.

1. Occasionally, and at random, if I decide to import files using double click on project bin (rather than right click), Premiere hangs and stops responding, which forces me to restart app. (I was also working in the timeline and Premiere hung as I tried to click on something, which prompted me to visit these forums).

2. Timeline was not showing Playhead as I scrubbed through, even though the monitor was showing that I was scrubbing through using my mouse. Very annoying because restarting app or even windows did nothing. (I did solve it by resizing the workspace, which "reset" it and the playhead was back)

3. Importing a sequence or a project into an open project doesn't seem to work anymore. You do have the option of opening two projects at the same time, then copying and pasting all the stuff into the new project, but that is an extra step that wasn't necessary before.

The first problem is the most annoying, as I am constantly getting disrupted during my workflow. Is this an app problem, a windows 10 problem, or both? HELP! And thanks for reading.

System specs:

Win 10 Pro

i7-6700K @ 4.00GHz

SSD main drive

Adobe Premiere Pro CC 2018 12.0.1 (Build 69)