A MBP with a:
Radeon Pro 555 with 2GB of GDDR5
Or
Radeon Pro 560 with 4GB of GDDR5
is going to have a hard time in the 4k space, especially with multiple outputs.
With the upgraded version, here are some benchmarks:
https://www.notebookcheck.net/AMD-Radeo ... 608.0.html
Specs for Resolume 5 at 1080p (figure half of this for 4k)
6/19/2017 16:27:54 Arena 5 2017 MacBook Pro 15" 10.12 Sierra Radeon Pro 560 4GB Apple 2.9Ghz Quad Core Kaby Lake SSD E2 (gui res)-2880x1800 (outputs)-1 (output res)-1920x1080 (Number of Layers Clean)-12 6/19/2017 (price)-4099 AUD