Radeon Windows 10 vs. Linux RadeonSI/RADV Gaming Performance
Metro Last Light Redux was developed by 4A Games and they handled the Linux porting rather than contracting it out. Metro Last Light Redux has worked on the Radeon Linux stack for some time.
Metro Last Light Redux runs well on RadeonSI and under Linux, similar to the NVIDIA tests, were very competitive with Microsoft Windows 10 Pro x64. The R9 Fury was about the same performance while the RX 480 was faster on Linux.