M1 MBP Screen Flickering, External Monitor Crashing, & Unable to Connect to Apple Watch

Hi all, I LOVE this new M1 MacBook Pro, but it is exhibiting some issues that my Intel MacBook Pro never had!

First, I have noticed the built-in display sometimes flickers if the resolution is scaled down. Scaling it back to default seems to fix the problem. Anyone else seeing this? I want to make sure it's a software and not a hardware issue.

Second, when connected to an external monitor, I have seen the M1 lock and log me out and the external monitor will go black. It's the same monitor and cable I used with the Intel Mac and never had this issue. It's EXTREMELY aggravating because it will lock me out in the middle of work.

Lastly, and maybe this is somehow related to the display issues, my M1 MacBook Pro does not automatically unlock when my Apple Watch is nearby like my Intel Mac used to. I went into Settings>Security and I click on the "Use your Apple Watch to unlock apps..." and then I get this error every time: "Your Mac was unable to communicate with your Apple Watch."

These three things are really affecting my workflow, so I'm hoping these are easy fixes. Anyone else seeing these issues?