Use an older operating system.
I was still on Windows XP in 2012 and now I am finally on Windows Vista simply to take advantage of 64-bit architecture.
I have found that XP and Vista are
BEST (as far as compatibility) for playing older/classic games which is what I mostly play.
I went from a Single Core P4 in 2012 (was still working great) to a Quad Core Phenom II.
I only upgraded because the components I had long desired had become so cheap considering the improvement in output rendered I would notice because they were now considered "outdated" themselves.
I saw them as being time-tested and proven!
So I went for it...
But yeah, try an older OS.
I have heard rumors about older OS's being more vulnerable... which may or may not be true.
However, just make sure you secure your PC well and you should be fine.
Hope this helps...
-iLeeT_PeeP