I have yet to use the opt out and not sure if I will. I have xbox1x with ssd, hardwired into a brand new high end gaming router (just installed this weekend), with over 400mps ISP. I should have no lag at all coming from my side of things. Yet it does feel that since this latest update I am experiencing more rubber banding, screen glitches, strobe effects while running and other stuff that is getting to be annoying.
Heck, it was so bad yesterday (I was sailing solo as I usually do) that I was convinced there were 2-4 pirates hiding on my ship out of sight, LOL. I litterally checked every inch of my ship, I even checked recent players (there were no new ones listed for over 2 hours when I did this check) and even scuttled the ship to see if I was just blind to someone hiding out. During this entire time, there were no other ships in site. I am fairly sure that for at least part of this time the skelly fleet cloud was in the sky on the opposite side of the map from me, meaning no skelly ships near me to cause this. Scuttling did not fix the rubber banding or other issues. So I left the server and tried again, and once again I continued to have the same issues.
At this point I am left to believe the issue is on Rare, whether it is a code issue or server issue I am not qualified to answer. I just know it is not on my end. In fact, the reason for the new router was because I wanted to remove any doubt that there was a problem on my end.