FPS and Stuttering
You might try over in Tech Support. The Techie players may hang out there.
Welcome return. =)
The game isn’t one that gets GPU bound unless you have a really low end GPU.
The game is CPU bound. It uses around 3 cores worth of performance regardless how many cores you have. The GTX 760 is well beyond what you need unless you are trying to drive a multi HDTV res or 4K setup and even then it’s probably good enough.
This means performance per core matters more than performance rating of the whole CPU. AMD FX CPUs have roughly 1/2 the performance of Intel CPUs on a true core per core basis.
The game’s performance falls off rapidly the more players there are around you. With megaserver tech there’s always a crowd now.
RIP City of Heroes
There is a slight stutter in some areas due to megaserver. The poor FPS can be somewhat alleviated by adjusting the Character Models option in the Graphics settings.
Also, some flash content (cough cough) causes permanent frame stutter with AMD cards while the FPS will remain the same as normal and can only be remedied by restarting the graphics drivers or your computer.