alosso: The diversity is one argument against you: If all those different users face discons, the best guess of the cause may be the common target, WGT's server.
From reading reports here for years, my suspicion is that the servers have too high demands on response time of the connected users, deeming them a problem too soon.
This has definitely happened and can still happen.
We all saw what happened when Wolf Creek (full course) was opened! Terrific overload of the WGT servers was obvious and lasted a couple of days, finally tapering off to basically normal after everyone got in a bunch of rounds on the new course! I know some people that stayed up during the night to jump right on after the downtime! During that problem with overloaded WGT servers, the cause was obvious because we had a huge number of complaints in a short time to confirm where the problem was.
Excluding the complaints during an obvious WGT server issue like above, the vast number of posts that I have come across in the forums related to issues like this are totally end-user related because we often see some chime in that it may be a specific browser problem yet others using the same browser state they do not have the issue.
You are right that we don't know an accurate breakdown, but in my computer experience dating back 52 years has shown me that the vast majority of reported problems of any type are end-user related.
Anyway, I will not hold my breath for WGT to provide us any info related to this!!
Sei gut, mein Freund!