See if your system is jerky

I can't say if it's the CPU or if it's something else. I just know that the jerkiness started at about the time I swapped the CPUs. I put my old CPU away somewhere and haven't had a whole lot of time to look for it. Until I find it and can swap it back in, I won't know for sure if that's the problem or not.
Also, getting rid of unneeded background tasks do nothing to help. I get the jerk in about one second time intervals.