WGTicon: many things there are internal fixes/upgrades that you actually do not see
One thing I have seen is changes to green speeds, break and wind effects. I am not the only one to notice changes in all these parameters in the last month or 2. Members in my CC has reported widely varying results, other players I play in Multi-play (when it works) also acknowledge changes to the game.
So although, I may not have played this game for a long long time, I have managed to reach TM tier, so would like to think I have a little experience in this game and would be able to detect not-so subtle changes to the game.
Mind you, I do play in the morning and there could be dew on the greens :p