I recently purchased the Acer Aspire V17 Nitro Black edition with a 4k resolution 17" screen. I fully intend to purchase the AKiTiO Node for use with its Thunderbolt 3 port. The laptop includes a Core i7 6700HQ CPU.   Can anyone provide some guidance, wisdom, or insight on what GPU should perform best under these conditions? Is Optimus desirable over XConnect? Does one brand or line of GPUs suffer more or less from the potential bandwidth bottleneck? Is memory size likely to be a significant help (4 GB vs 6 GB vs 8 GB)?   Thanks for any help!