Load Cronus PRO and go to Tools > Options > Device
Set the Output Protocol to XB360.
These are also the recommended default Speed Up Settings for Wii U Pro Wireless Controllers. If you have lag or dropped connection issues, try disabling DS4 Boost.
Check the box to the Left of 'Enable DualShock 4/Wiimote Bluetooth searching'.
The recommended Speed Up Settings when using a Wii U Pro Controller with a Bluetooth 4.0 USB Adapter are as above - you can choose to tweak with them if you have any issues. If you have a slower Bluetooth adapter or experience any issues with rumble then you should try different 'Rumble Over Bluetooth' speed settings. You have the alternative options of Flow Control+, Flow Control and Disabled.
You can now close the Options window and disconnect your CronusMAX PLUS from your PC.
Bluetooth and Wi-Fi devices use the same radio frequencies to communicate, they often interfere with one another and are prone to interference from other devices operating on the same frequencies. If you are experiencing lag with your wireless controller, even though you have tried different Speed Up Settings in the Device Options panel, there is a good chance you have a WiFi Router that is causing interference. We have found that routers such as Apple's Airport Express have this problem and you should make sure that the router is not in close proximity to your CronusMAX/Bluetooth Adapter. You should also try changing the WiFi Router Channel to optimize your wireless signal. Click Here for more information on how to do that.
We also recommend that you Click Here to check out an article that looks at the effects of such interference, what causes it and how to reduce it in a home or office environment.
If you do not intend to use your Wii U Pro controller without the CronusMAX PLUS in the future, you can now disable Wiimote Bluetooth searching to speed up subsequent wireless syncing.