Being that my understanding of the problems is the streaming issue occurred POST win 10 upgrade, I'd say it's a hardware issue. Win 10 not fully supporting the grafix card, aka sudo support**.
The reason for the OP accepting the upgrade to win 10 was the loss of the OSK.
Therefore my reasoning for my opinion. Revert to win7 and reinstall OSK ( if necessary )
**I've seen it, sudo support, on other upgraded computers here, mainly older laptops, so it exists. Reverting early win7 computers fixed 'new' video problems and a couple of printer/scanners. MS's 'automated compatibility check' SUX rocks IMHO on early win7 equipment,
If yours is an early model win7 - Rollback to win7 now, think you only have 30 days, or you're STUCK with a computer that barely works, and/or you may have to get a new printer, scanner, or whatever.
Re-install OSK as outlined in my previous post if necessary.(OSK is there in Microsoft or Windows components)
Have not seen the problem when the computer upgraded, was OEM win8 or newer. Or a win7 machine mfg/sold sometime after late summer / fall of 14.
One laptop was so horrid, and the customer had waited more than the 30 days before contacting me, that the ONLY alternative was an upgrade to LinuxMint/Cinnamon. Outcome? They again love their computer.
That's my story, and I'm stickin to it.
Upgrading from win8, I got a horror story there too, but I'll not put it here.