Which operating system do you use? Windows? Linux? Mac? other?
Both Windows and Linux - well, not so much Linux recently, I'm afraid.
I think that there was a similar thread in the past here.
I'm currently using Windows 10 preview, Windows 8.1 and Windows 7 Ultimate on a couple of systems. All operating systems are 64-bit and some are heavy customized (to increase performance).
I had some Ubuntu system in the past but that wasn't really working out for me.
Have you tried Linux Mint? I also used to have Ubuntu installed, but switched to Mint a few years ago - if nothing else, it seems far less heavy to me.