Php-cgi.exe hangs in 3.5.0

I recently upgraded from Piwik 3.0.4 to Matomo 3.5.0. When using Piwik 3.0.4, I hadn’t experienced any problems. After upgrading to 3.5.0 various widgets load for an indefinite amount of time, and eventually time out.

Nothing appears in my php error log, but when I look at the task manager of my server I see one process of php-cgi.exe that is capped at ~1GB of RAM.

My instance of Matomo is being run on a Windows 2008 R2 server and currently running on php 5.6.0.

Any thoughts on this issue?