You might want to check your flash version. There was a flash update earlier in the week. Possibly the new version doesn't work well with WGT.
Also there is a bug where on some holes the aim arc is always on. The aim arc must use lots of resources and isn't supposed to be on during your shot. That is the only time my meter isn't very smooth. Easy fix, turn the aim arc off on the few holes affected by the bug or turn it off on all holes.