Important: MultiBeast v9.1.0's FakeSMC Plugins' FakeSMC_GPUSensors.kext has not been updated to support Pascal graphics cards. To prevent Kernel Panics and Reboot do this step. We'll be installing different versions of these in the Power Management section later anyway.
1) Open the installation drive's /Library/Extensions/ folder
2) Find and trash the FakeSMC_GPUSensors.kext
3) Delete the Trash
Thanks. I am also going to try to confirm I'm okay on 10.12.4, I think.