I just purchased a GA-Z170X-UD5(rev.1.0) and I am unable to use Memory Channel B in any configuration. When ever I try to use either DDR4_1 or DDR4_3 the motherboard will try to boot up print out code 55 and then restart doing it all again in a loop. Both of my ram sticks work in DDR4_4 and DDR4_2. Any suggestions of what I can try?

Model Name:GA-Z170X-UD5(rev.1.0)
BIOS Ver.: F3
CPU Model:Intel Core i7-6700K
CPU Cooler: Corsair H100i
Memory Brand:Corsair
Memory Part No.:CMK16GX4M2A2400C14
Memory Size:16GB (2x8GB)
Power Supply:Corsair RM850
Operating System:Win 10 64-bit