I'm not totally sure how to explain this, but all of my sims have been having issues with flashing and disappearing eyes. Lines also come out of their heads. It happens in CAS mostly, but sometimes it'll happen to the little version of their head when I go to tell them to do things.
I thought it might be a makeup issue, as it tends to start when I switch eyebrows/makeups, but even after taking those out, I'm still having issues. It's very strange. Anyone know what's up? It's not a game-breaking glitch or anything...just really annoying.

Here's a picture:



Here's my dxdiag:

Operating System: Windows 10 Home 64-bit (10.0, Build 10586) (10586.th2_release.151121-2308)
Language: English (Regional Setting: English)
System Manufacturer: Dell Inc.
System Model: Inspiron 5748
BIOS: A03
Processor: Intel(R) Core(TM) i5-4210U CPU @ 1.70GHz (4 CPUs), ~1.7GHz
Memory: 8192MB RAM
Available OS Memory: 8096MB RAM
Page File: 6695MB used, 2680MB available
Windows Dir: C:\WINDOWS
DirectX Version: 12
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
Miracast: Available, with HDCP
Microsoft Graphics Hybrid: Not Supported

I have no idea what's causing that but I really like the sim in the picture. [/unhelpful]

Are you using any custom eyes when this happens?
I used to have an eye masking problem with one cc hair I was using but I have the same hair as in the picture and I know that's not the cause.
The lines make me think it could be a problem with frames. Do you notice it after you've been playing a long time? Do you play windowed?

Solved? Not 100% sure what I did, but still holding out to see if it happens again. For now, it's fixed. @o@