Ok, so this may be a little tricky to explain but here goes:-
My specs: H170m-D3H, i5 6600, 16gb, 850 EVO, GTX 970, Sierra 10.12.5, SysDef 17,1
System runs beautifully, clean, smooth and has NEVER crashed! it's a joy to use, however.....
If I walk away from my computer and leave for around 10...