Every so often, when I open a new tab in Google Chrome and go to a site, the page appears with black squares where the content should be. The browser's UI is still visible, and when I mouseover where the links should be, the cursor changes from a pointer to a hand icon, but nothing on the page itself is visible. Any subsequent pages visited have the same effect, as does opening new tabs. Restarting Chrome gets rid of the problem.
This only happens intermittently, otherwise I'd add a screenshot.
I'm on the latest version of Chrome, it's been happening for months.
Chrome Version 55.0.2883.95 (64-bit)
OS X Sierra 10.12.2 (16C67)
MacBook Pro (15-inch, Early 2011)