For sure. Firstly, raise or lower it with confidence. It is actually pretty much impossible to do any damage here. It sounds like your just venturing into PBO so you haven't turned off any current regulators or anything like that, which is good. Your chip and mobo will automatically limit your chip from running to much current or going above 90 celsius. The chip caps out at 115+ so no worries there. To get to your question on LLC with this board lower numbers mean a higher Load Line Calibration. I find I cannot hit my max boost potential without at least an LLC of 4 though an LLC of 5 will give you much better temps with only a minimal reduction in clock. As you change LLC any Curve Optimizer settings will be drastically affected so its best to tune with only LLC first and then work your way out. Best of Luck man! Just raising the LLC (Auto to LLC4) should stabilize your system per your original inquiry.You may be right, adjusting ram timings didn't hep.
Do you have a suggestion for which LLC mode to use? Currently just on Auto, and finding it hard to figure out which each mode does.