Gravelord Nito :
I said it wrong then. Sometimes it works, sometimes don't. For example I fixed my stutter in Darksiders by turning on max pre-rendered frames to some number. For Deadly Premonition(broken game I know) I fixed issue by limiting fps to 53(weird I know). So I got an idea to limit fps to 59 in some games but it didn't help. It's really weird problem, sometimes occurs like every hour once, sometimes only few times in games, and sometimes it's often.
This is something that can only really be fixed with spending more money. It is very hard to completely eliminate stuttering and tearing unless it is done in conjunction with the monitor itself which is what a Gsync monitor does. Even on a high end rig with a very good CPU, you will get the occasional frame drop or tear. Your first instinct, though, about the CPU is also true. The x4 is fairly low end and old now in terms of a modern gaming CPU and your GPU is pretty strong. While it isn't completely obsolete, it is the weakest link in your system assuming that 8GB of RAM is DDR3. With the prices of Gsync displays, it would probably be cheaper to upgrade the CPU and motherboard than buying a new monitor. You might want to try overclocking the Phenom first, though. See if you can get another 500-600 MHz or so on it if you don't want to spend anymore money right now. You could also try lowering the resolution to see if that gives you more consistent performance in the games you play. But, to completely get rid of any of these annoyances, you are going to have to upgrade eventually. I found out the same thing when I put a relatively beastly HD 7950 boost in my Q6600 PC a few years ago. The Core 2 Quad was good enough to run all my games in 1080p with decent FPS but I would get frame rate drop and stutter which was annoying since it seemed to happen during faster scenes like driving or running. Nothing I did with vsync, frame rate limiter or dropping the settings lower helped. Swapping it over to a new Ivy Bridge quad core system helped a ton, though.
Basically, try these:
[Free]
-overclock CPU as much as you can; make sure it is stable with some stress testing
-lower resolution
-lower detail settings and/or turn off things like AA and AF
-another thing I should have mentioned - take advantage of the free upgrade to Window 10. It won't give you a massive -boost in performance but it should decrease the system resources overhead a little vs Win 8.1.
-Check if there are any new drivers for the GTX 970 from the Nvidia website
-Disable the GeForce Experience app. It messes with your settings sometimes making it worse instead of better.
-Boost the clock of the 970 a little and give the VRAM a little boost as well like ~8 to 10% and make sure it is stable before leaving it there.
[Not Free]
-new CPU and motherboard
-new RAM if you are using DDR2
-Gsync (although CPU, RAM and a new motherboard should be enough to minimize it)