Freezing and Stuttering

I've been getting painful stuttering issues during firefights in Sandstorm.
Video showing the issue:
Youtube Video

You can see my FPS tank via the top right corner of the video.
Only been having the issue on this map/32 player server so far.
Anyone else been having issues?

Specs:
i5-7600k
1060 6GB
16GB Ram
Game is on an SSD

Settings are all on high, no AA.

I like all the changes in the last patch but performance is what need to be improved now!
Im having the same problem in many maps.

Looks like your connection to Focus Home Interactive - Official Forums was lost, please wait while we try to reconnect.