strange sound when loading. game shakes. animals move sideways and/or disappear

Right after the current update, glitches began occurring when two players are using split screen. When second player approaches animals, they move sideways. Sometimes the screen "shakes" and freezes up. Restarting only works for a short time. I've tried restarting, shutting down the console completely and restarting, shutting down, unplugging, replugging and restarting, using a cooling fan, reconnecting the wireless controllers. The problem is the same using either controller as the #2 player.