Intermittent Screen Flickering On All Open Apps/Windows, And Impromptu Menu Canceling?

Is anyone else experiencing screen flickering and involuntary menu cancels on any and all apps, windows and screens while Dreamweaver is open?

I trashed my preferences and Dreamweaver is still causing this frustrating behavior, every 20-30 seconds or so.

Even in the middle of writing the above line, this Dreamweaver behavior forced the focus to cancel out of the input field, forcing me to click back into the field to continue writing my query.

It is the only Adobe program I have that behaves this way.

Is there some sync process, or redraw process occurring in the background that I’m not aware of?

I glanced through the menu and panel options and have not seen anything, but it’s entirely possible I’m missing something.

Any help is appreciated. Thanks.

Dreamweaver 18.2

Mac OS HighSierra 10.13.6

21.5" mid 2011 imac.

2.5 GHz Intel Core i5

4 GB 1333 MHz DDR3

AMD Radeon HD 6750M 512 MB