2015 13" MacBook Pro [5th,2C,U] + Quadro K6000 @ 16Gbps-TB2>TB3 (ASUS XG Station Pro) + macOS 10.14.2 & Win10 [OliverB]
The Quadro K6000 should work. I haven't tested the card with your exact setup, so there is always a chance that something don't work. From theory the answer is yes.
Thank you so much for your reply. I'm considering giving a try to this card, but I'm confused because I found here https://www.techpowerup.com/gpu-specs/quadro-k6000.c2426
that this card is a Kepler based GPU, and Vray only supports Maxwell-, Pascal-, Turing- or Volta-based NVIDIA. Therefore the card would work fine but not with Vray.
this is bad luck. Kepler ist the only nVidia chip that works with Mojave or Catalina.