I’m wondering if anyone else is having this problem and knows a fix? I’m on a Steam Link connected by ethernet to a Mac Pro 2013, AMD Firepro graphics cards, running OS X High Sierra. Controller doesn’t work at all unless I switch the game video graphics to windowed 1920x1080 mode. When I do it only acts as a mouse. I tried a community configuration and it still behaved the same way. Any suggestions? Thanks.