Google Chrome background tabs don't load/build until selected

INT_541 had the right answer above. Out of all the sites I checked, his was the only one that worked for me. I disabled the setting below and tabs started functioning like before (loading in the background). Without it, even tabs I had viewed would get unloaded until I viewed them again. It is nice to have this option if your bandwidth and PC can handle it.

chrome://flags/#enable-offline-auto-reload-visible-only

You can in addition disable the offline auto reload in general. If you are like me only set your computer to sleep without closing chrome.

chrome://flags/#enable-offline-auto-reload