It doesn't happen to me on Windows or Mac.
What exact version of AE are you running down to the last decimal? Is it 13.7.1?
What OS version?
Does it happen every time you work with AE? What is in your comp? Effects, plugins, format/codec of assets, etc.?
Here is my system info:
AE version 126.96.36.199—though this happened with the previous version of AE as well. It’s actually been happening since I started working on this machine.
Mac OS X 10.9.5
Mac Pro (late 2013)
3 GHz 8-Core Intel Xeon E5
64 GB 1867 MHz DDR3 ECC
AMD FirePro D700 6144 MB
I believe it happens every time I work in AE, though I haven’t run tests to try and pinpoint exactly when it happens. I first noticed it when my RAM previews got shorter and shorter until I couldn’t preview anything. When researching that issue I found someone recommending to look for aerendercore failures in the Activity Monitor and then force-quit them. That’s what I’ve been doing since.