Just got this box and did initial testing…
The good:
- DV FEL! Yay
! Thanks to CE devs for this 
- Solid Wi-Fi 6 performance. Streamed 400Mbps Jellyfish clip perfectly
- HD/object-based audio passthrough
- Pretty snappy box (better than expected), w/its 4GB RAM helping. Wondering if AM9 Pro is significantly better for CE use?!
- The cheaper SK4 (non-Pro) should be just as good, considering almost exact specs—just -K SoC vs. -J for non-Pro
The not so good:
- Gigabit ethernet adapters (tried 3 different types) not recognized using USB C nor USB 2.0 ports
- Included 100M LAN performance is poor, so using Wi-Fi is a must for local streaming
- Box is a bit buggy w/remote control responsiveness
- On Android side, more sluggish performance, and USB keyboard sometimes doesn’t work
