If I try to import something, it will keep spinning and eventually shut down making me lose all my work
Shawna, I have no SOLID answer myself. Sad to day but there are a list of factors to cause that one thing. I learned that since CC 2014, a lot of the subsequent releases, have had issues. NOT ALL, but most. I am VERY slow to adopt the latest and greatest. Sometimes, it's the footage, the Codec, the version of Premiere Pro itself. System resources, etc. I've had graphics cards and driver for those cards cause issues. EVEN, the Catalyst software years ago that run on Windows in the system tray. It would cause a system freeze with AE and Premiere Pro. Again, I'd look at the version you are running first. See if anyone in the online forums are running into the same issues.
Premiere is especially buggy the past few years. Theoretically adobe support can "help you optimize your software", but I haven't seen a ton of fruit with this. In my experience, there's not way to make Premiere less buggy and unreliable, but there ARE work arounds. This video has SAVED MY LIFE. https://www.youtube.com/watch?v=c27zMG8b8Y0
It sucks being married to such a faulty product. I love premiere, but its the most unreliable video software on the market. Wish you all the best!
Well, that's a question we all have for just about any app.
A good way to prevent your sequence/playback from freezing/lagging after working on a project for a while is to "Render In and Out" after selecting your "In" and "Out". I typically just select the portion I am working on, then hit "Render In and Out". You are able to watch the portion you just rendered without it lagging. But once you start to add more edits, you'll likely have to go through the process again. Typically, this is either because your computer's processor can't handle what you're doing, or because your sequence settings aren't set up properly.