Hi All,
I understand the frustration regarding this issue, we are continuing to investigate this and work closely with the devs (who are treating this as very high priority) to find the cause and deploy a fix. We have an active thread on the PUBG forum, requesting additional information from players, which will greatly help us in our efforts to track down the cause of the stuttering/freezing.
https://forums.pubg.com/topic/396745-pc-lag-in-random-since-this-patch/
We greatly appreciate your patience with this one and are working to have it resolved as soon as possible.
Cheers!