I don't think the ownership of WGT has changed anytime recently. I also have heard that WGT is not a major source of income for Topgolf, so while they all want to make money, this is not how they do it. They do that with their worldwide centers, I believe.
I have not noticed any real change in meter speed - there are some times when my CPU is loaded, so I stop other tasks, but that is rare for me.
I will note that playing with the free balls and lower level irons and putter introduces a lot more uncertainty in the results of any given shot, but not through the meter - that is just how the game is designed.
Has anything else changed lately - tiering up, different clubs, etc?