iMac with OSX Mojave slow to wake
Since installing Mojave my iMac takes 10sec plus to wake from sleep, anyone else having the same issue?
iMac with Retina 5K display, macOS Mojave (10.14)
disconnect all external storage devices and reset the SMC
How to reset the System Management Controller (SMC) on your Mac - Apple Support
repeat 2 or 3 times
rest the NVRAM
Reset NVRAM or PRAM on your Mac - Apple Support
repeat 2 or 3 times
boot into safe mode
Use safe mode to isolate issues with your Mac - Apple Support
reboot normally then test.
failing those steps for futher analysis you may post an Etrecheck report. The link is http://www.etrecheck.com