Can we see your normal maps please? I'm curious if there isn't some artifact hiding there, since you mentioned that the default material does not display this issue.
I have the same thing.What helps for me is when its doing this,hit space for UI then switch to any of the default meshes,then back to custom mesh again.Hope it helps.
The Megascans Starter Kit is the default set of materials included in the Suite, IIRC. If you buy the Suite as it stands, yes, it will get upgraded for free when the beta testing is over.
My vertex is weird. I don't know how or what it's called but how do I make it to the default color (Yellow with blue)? Picture: http://imgur.com/shPkefc
Once I got past the utterly bizarre choice for view controls, i enjoyed the presentation. Alot of functions seem to point at a default set tho, is this still incomplete?
Try the version from Blender.org, you can extract it where you want just set the startup.blend as your default launch scene: File -> Save Startup File.
A custom polycount skin would be awesome, but it's also worth noting that you can get a dark version of the default skin easily, as an option. http://www.mediawiki.org/wiki/Skin:Darkvector
Alpha 002 release. ALPHA_002 Added GGX specular method. Please take special notice in the SPECULAR MENU area of the documentation. Set shadow taps default to 10