I'm considering setting up an eGPU for gaming on my mid-2014 MBPr, but I do most of my gaming on a Thunderbolt Display. I'm aware that it's possible to use Optimus to run the TBD off an eGPU in Windows, and I'm willing to live with that performance decrease, but I'm not sure what's possible in OSX. Does anybody know anything about this?
P.S. The TBD's connectivity is too important to my setup to be removed, so that's not an option, even though I know an eGPU would work better with a display connected directly to the GPU.