I also work on a Mac and read and work with PDFs most of the day (I'm sure not as much as you). However, I almost never have my Acrobat Pro DC crash and/or freeze. My suspicion, is that there is something wrong either with your Acrobat Pro's instillation, it's preferences, or something with your computer.
I would like you to try several things if you can:
Once you've done this, start up in the alternate user world, and try using Acrobat. If it doesn't freeze up, there's something wrong with your regular system.
3) if #2 works than try to fix your regular OS by restarting into Safe mode. To do this Shut down your Mac and then boot up again. As soon as you hear the chime, press the shift key. Hold it until it fully boots up. This will probably take longer than than normal and that's good. If it takes a long time that means that the Mac is self-healing itself during this process. If your Mac has all of your normal options (e.g., Dropbox) that means you didn't press the Shift key fast enough and you'll need to do it again. Once you complete starting up in Save mode, go ahead and Shut down again and then reboot. See how that works.
#4) If you're still having problems, than reboot into Repair mode, When restarting, press the Command-r keys until you've booted into repair mode. Select Disk Utility and perform First Aid on your hard drive.
Yeah that's a lot of things to try, hopefully one of the earlier ones will do it. Let me know how it works out.