What I have to offer is a perspective reflecting this stack:

macos sierra – up to date
on an i7 mac book pro feeding HDMI 720p video (latest software became very slow on 1080p HD mode, but it was not doing that grand slowdown in earlier OS editions).

Ubuntu 16.04 in a VM with 3G RAM and 32gig disk

nginx virtual hosting with mysql database

professionally cloud hosted as

also testing on a windows host, with a Ubuntu 14 instance below on things like firefox and IE testing