[persilj]

As all the disturbing seems to occur at any time of the day there might be any amount of individuals behind this. There might also be some background processes lurking on my computer and actions of the remote users might partially be driven by computer algorithms.

I've installed the OS (Windows) multiple times (including formatting the hard drive) and I've bought lots of relatively expensive and high quality hardware like Asrock Extreme Pro 4, Nvidia GTX 780, HyperX memory and a very fast AMD processor, but it might even be that one or more of the components or their drivers have made the matters even worse (easier to the attacker). I also believe that one of the installed hardware components is malicious in some way (maybe by design?).

Do not doubt me.