Gigabit WAN and switch issues

I have an Asus AC87u (2 actually) that I'm having issues with and I don't know whether it's a firmware bug, or some setting I've got turned on.

Asus AC87u w/ 378.55 firmware

I recently upgraded to Gigabit Fiber at home. When I connect to the gigabit WAN port all but one of the switch ports on the router starts auto negotiating at 100mb instead of gigabit. Now if I change the order I plug everything in (plug in all the switch ports first, then the WAN port last) the WAN port will...

Gigabit WAN and switch issues