OK.
Simple answer is the OS. Windows 10 is a dog.
It is a public Beta where everyone who is not a fat-cat corporation is an idiot guinea-pig exposed to FORCED updates which are GUARANTEED to trash an OS sooner or later.
Thankyou, Redmond. Just remember the people who lost their gonads with the monumental stuff-ups that were Windows 8 and its imbecile progeny 8.1
As much as is humanly possible, avoid 10 until such time as you are able to PAY for it when it actually works.
Testing a fire-arm's performance via a game of Russian Roulette only ends one way.
Put 'politely', most errors perpetrated upon users of Win 10 are thanks to an animal called 'Windows Update'. It's as simple as that...