Another finding I'd like to share that temporarily "solves" this problem.
The Asus Z87 Maximus VI Formula board I have allows me to enable/disable USB controllers from the BIOS. I disabled the Asmedia USB3 controller and all the issues seem to go away:
1. laggy BIOS initialization
2. slow udev initialization
3. and USB devices not being available until after about 40-50 seconds after boot
Since the controller winds up "dead" on reboots or power cycles without power cut, any device I connect to those USB ports don't work anyway. There is no point for me to use them for any devices.
Another finding I'd like to share that temporarily "solves" this problem.
The Asus Z87 Maximus VI Formula board I have allows me to enable/disable USB controllers from the BIOS. I disabled the Asmedia USB3 controller and all the issues seem to go away:
1. laggy BIOS initialization
2. slow udev initialization
3. and USB devices not being available until after about 40-50 seconds after boot
Since the controller winds up "dead" on reboots or power cycles without power cut, any device I connect to those USB ports don't work anyway. There is no point for me to use them for any devices.