Photoshop: MacBook Pro 2015 screen flicker

THE ISSUE:
The screen flickers when, under specific conditions in Photoshop, the cursor of any brush tool changes to a different cursor. Here's a video: https://youtu.be/m2S9DQPBypI

HARDWARE AND SOFTWARE:
MacBook Pro 2015 15” 2.2 Ghz with integrated Intel Iris Pro graphics (16 GB RAM, macOS High Sierra 10.13.1). I tested the issue on Photoshop CC 2018, CC 2017 and CS6.

THE DETAILS:
The whole screen (not just the Photoshop app) shifts to the right or down (or both) when the brush cursor changes to another cursor. For example: 
• When a brush cursor changes to the hand tool by pressing spacebar.
• When the healing brush or clone stamp cursor changes to the target cursor by pressing the Option key.
• When a brush cursor changes to the pointer cursor by leaving the document window for a palette, the tool bar or the options bar. You need to fiddle a little bit to get this one (make the cursor change repeatedly from the brush to the pointer and you'll see the screen flicker).

The flickering ONLY happens at a specific combinaisons of zoom percentages and brush size ranges:
• 3200% zoom: with brush sizes from 6 to 10 inclusively
• 1600% zoom: from 11 to 20 inclusively
• 800% zoom: from 21 to 40 inclusively
• 400% zoom: from 41 to 81 inclusively
• 200% zoom: from 81 to 162 inclusively
• 100% zoom: from 162 to 324 inclusively
• 50% zoom: from 323 to 648 inclusively
• 25% zoom: from 646 to 1297 inclusively
• 12.5% zoom: from 1292 to 2595 inclusively
• 6.25% zoom: from 2584 to 5000 inclusively

The aforementioned values are for a ROUND brush tip shape and for the “Normal Brush Tip” (defined under Cursor in Photoshop’s Preferences).

ADDITIONAL INFORMATION:

• The brush size ranges differ with custom tip shapes, and also when using “Full Size Brush Tip” (in Photoshop’s Preferences).
• There is NO flickering with the “Standard” or “Precise” tips.
• There is NO flickering when macOS is in Safe mode, where accelerated graphics is disabled, which leads me to think the issue is tied to the integrated Intel Iris Pro graphics.
• The flickering happens when the cursor is over any type of image (e.g. a plain background color, a photo, etc). Interestingly, the issue does NOT happen after applying an Add Noise filter (with any Amount value GREATER than 1).
• Interestingly, if under Accessibility in macOS System Preferences I change the "Cursor size", this changes the brush size ranges. That's probably because this feature not only changes the pointer cursor size, but also the size of Photoshop's brush cursors
• I tried to capture the flickering using the video screen capture in Quicktime. The flickering doesn’t show when I review the recorded video.
• The flickering is present in native "default" screen resolution and the two "More Space" settings, but NOT with the two "Larger Text".
• The flickering happens both on battery and plugged-in.
• There is also flickering with the brush tools in Camera Raw (with specific brush sizes) but I have not experienced flickering in other apps (including Adobe Illustrator) or in any macOS window.