I finally got around to reporting this issue I saw some time ago. Apologies.
While cycling through the character classes, some exhibit flickering issues, especially on the capes. I captured a video with my phone in hopes of demonstrating it.
Clicking back and forth on the character race appears to resolve the issue.
Currently running Divinity Original Sin 2 Alpha v3.0.77.309 on Windows 10 Pro 1703. Updated to the latest Intel Iris Graphics 550 driver 20.19.15.4624 released on 2017-03-08.
This time I only saw the flicker on the Shadow Blade character, where as in previous attempts (including the first alpha) several characters exhibited the graphical glitch.
Currently, integrated graphics are not officially supported. The flickering fabric textures with some presets is a known issue with Radeon cards in the release version, as well, but appears to be fixed in the development version. I don't know if there were any fixes specifically for Radeon graphics cards, but there were updates to the textures, which might also help with integrated graphics.
Thanks Raze. I'll report back my findings after I give it another try with a newer version.
Hopefully Intel Iris graphics and macOS are on the list to support eventually -- it's unlikely that I'll be able to afford a proper gaming system anytime soon.