Why don't you try it first by installing web drivers on 10.11? AFAIK all cards that work with 10.11 should work with 10.12 as well. And if can you run without web driver, do it. Web driver will not improve anything, only make things worse. Use web driver only with cards that requre it (i.e. Maxwell)
BTW: and think twice before upgrading to Sierra. Imho it's not worth it and at least for me El Capitan worked better. And also Apple continued their way of crippling their apps (this time: Console.app - just like they did with Disk Utility in El Cap, i.e. app is much less useful after the update)
Actually, while it's true that the frontend Console app is now pretty horrible, you can still find pretty much any info you want (and I'd say have even more control over it) by using the "log" command, once you understand how to use it properly.