Hi Primeblue
This can also be power supply related.
Your CPU should not throttle at 54C. Throttling is heat related and throttling occurs at well over 80C.
LLC is to provide core voltage adjustment when system is under load. However this can effect the MB VRMs which can overheat if the processor is OCed. Generally the MB would shut down to prevent damage.
Load Line Calibration is set differently on some boards. Some are set in %, others in numbers and some its just turn it on. To maintain stability and get the right setting, you need to monitor your max and min voltages in HWMonitor when the system is under load to check for any voltage droop then adjust accordingly. Many UEFI Bios also have Current capability and that should also be raised when OCing.
Please list you MB and to what frequency have you OCed the FX-8350.?
Also list any other changes in Bios.?
What is your cooling system.?
It's probably a good idea to list your full system specs.