GTX 1060 6GB Mini & i5-5250u over Thunderbolt 2

[RyanLovesJosh]

I'm planning on buying an egpu with thunderbolt 2 and hook it up on my iMac. So, will an i5-5250u bottleneck a Zotac GTX 1060 6gb Mini over Thunderbolt 2? If so will at least play games such as Overwatch, League of legends, Vampyr and Fortnite at 60 fps medium settings or lower? Also I'm using windows through bootcamp.