FPS- Normal
Changed servers -Unrelated
Changed video settings - Unrelated
Deleted Config file - resolved for first play though
, then client become unresponsive on further attempts to load client
Workaround for client becoming unresponsive - delete config file before each launch of the client
Rolled back to Stable - game runs normally
Updated to experimental again
Issue returned to random client freezing
( freezes for a few seconds , then able to move for a few seconds , freezes again)