I thought it would never happen, but I'm giving up on Chrome and going back to Firefox. For some reason, Chrome has gotten really slow with frequent "resolving host" delays. Apparently, it's a common problem. Many solutions have been offered, and none works for me. Today, the final straw: Chrome doesn't display right-click menus in Google Plus. They actually appear, but they are behind the Chrome window.
So I'm trying Firefox. It will take some time to adapt, but so far it's working well. And it's nice to have a decent bookmarks feature again.