After changing video card still have Fps Drops and Performance issues

[jens]

For some v-sync works that it runs 60 only if it is capable of running at 60 or above. If the fps drops to 59.9 it will go down to 30 fps. You can try to disable limitfps, as I said in the other thread, and leave v-sync active.

Otherwise you have to find the cause for why your computer/settings only allow 60 or 30 fps. Or play with vsync disabled.