There is an active disucssion going on in the Apple community forum that you may want to follow as well. Hackintosh Sierra Installer is a smart way to Install macOS Sierra on PC without the need of mac. Nothing has changed on my side, other than the 'upgrade' to macOS Sierra beta.

I am still investigation this sisue to see if it's an issue with Canon's Bonjour implementaiton, an issue with OS X or an issue with my WiFi system. Has anyone noticed slow speeds while on WiFi on macOS Sierra My Link speed is fine, 1300Mbps, yet I can no longer achieve my normal 150+Mbps downstream via WiFi. Again, a 'fix' is to use a hard-coded IP address and the LPD protocol, but that's less than ideal because it means I need to configure my router to always handout the same IP address to the printers (or to not assign IP adresse in the range I configure the printers to use a static IP in). These printers will periodically go offline with both Macs.

I am having other issues with Canon printers (MF733C and 6230) connected via WiFi and using Bonjour. Either search for it using Spotlight (Cmd + spacebar), or hold Option/Alt and click on the Wi-Fi icon at the top right of the screen, then select Open Wireless Diagnostics. For my small office environment that was an adequate solution but it was way more work than I had hoped for. I 'solved' the issue by hard-wiring the printer to my Ethernet switch and using the Canon IJ Network protocol. Additionally, your Mac will display green in System Preferences and show a connected Wi-Fi signal indicating you have a network connection, however you cannot reach the Internet. I have this printer and have both Sierra and High Sierra and have experienced the 'printer offline' issue when the printer is conncted via WiFi and using Bonjour. If you recently upgraded to Mac OS X High Sierra (10.13.1), you may not be able to connect to the Internet (over Wi-Fi or Ethernet) including unable to browse web pages or open the App Store.

Mac sierra searching for wifi