The workaround for me was to get 10 Pro and use a few of the business configurations to stop it telling me i can't do things. But it was time consuming to go through a load of stuff on the HDD and changing the security settings for the files i wanted to change so i could actually edit them without the continuous 'Access Denied' shenanigans. Anyone actually figured out why it does that? seems to me Microsoft set their security stuff a tad too aggressive, even AS an Administrator i can't edit things without using the actual system Admin account and do it all that way. - Still can't get Windows Defender to die, though. The 'Microsoft Antimalware' thingy still appears and saps bandwidth a lot of the time until i notice and mash 'End Task' about 10 times to make it disappear.
But since i took four hours to murder various useless processes i didn't want, it's kinda working now. Every month i usually turn Windows Update back on and update the security stuff, since to hell with letting that thing run rampant, suddenly downloading stuff in the middle of a game or restarting the PC when I've left the PC on overnight to download stuff. Mind you i noticed it's been considerably less sluggish as an OS since i installed the thing on an SSD. That seems to have dealt with the unresponsiveness in places.
On the plus side, it seems a bit more friendly with newer games that were released recently so that's a good thing.