macOS side: Daily video editing in Premiere, light-to-moderate After Effects work, lots and lots of photoshop, Lightroom, and Illustrator, batch transcodes and light color grading in DaVinci Resolve, and the usual Pages/Keynote/Safari/Spotify/Apple Mail/etc use to fill in the gaps. At home it sits next to a Dell P2715Q 4K monitor where I run it with both the built in display and the Dell in tandem. I've got a CODE mechanical tenkeyless keyboard (MX Blacks) and I position the laptop at my right so I can use the trackpad as my main input device. Absolutely hate mice.
Windows 10 side: Gaming. Battlefield 1 and Overwatch mainly, and they run great. I've got a mouse on deck for this - a Razer Mamba. I use the hackintosh in my sig when I'm home for gaming, but the MBP picks up the slack when I'm in bed or traveling.
Overall it's noticeably slower than the hackintosh in my signature which I use when I can, but I tend to get more work done on the MBP since it's portable and I can edit from bed, in the field, etc. It's the fastest notebook in town for OS X.