Game feels really stuttery

Hey everyone, i'm not sure if this is the right forum to be posting this but I don't see any other which could make sense 
I really want to play on Nostalrius, but for some reason I have a constant micro-stuttering and it makes the game feel really uncomfortable to play to me.
Here's a video showing exactly what I mean with someone else on the same game version having the same issue: https://www.youtube.com/watch?v=ho9vW88O2UM
Tried everything I could think of, turning on vsync/triple buffering inside and outside of the game in my nvidia control panel, fullscreen/windowed, etc.
Would be awesome if anyone knows if there's any way to get around this, only happens on this version of the game for me (TBC onwards is fine).
PC specs:
Windows 7 Home Premium
8GB RAM
i7-4790k @ 4GHz
GTX 770

I really want to play on Nostalrius, but for some reason I have a constant micro-stuttering and it makes the game feel really uncomfortable to play to me.
Here's a video showing exactly what I mean with someone else on the same game version having the same issue: https://www.youtube.com/watch?v=ho9vW88O2UM
Tried everything I could think of, turning on vsync/triple buffering inside and outside of the game in my nvidia control panel, fullscreen/windowed, etc.
Would be awesome if anyone knows if there's any way to get around this, only happens on this version of the game for me (TBC onwards is fine).
PC specs:
Windows 7 Home Premium
8GB RAM
i7-4790k @ 4GHz
GTX 770