DanManCan,
if it helps at all, I have found that the jerky / stuttering meter issue seems to be often related to network speed / wgt network speed / your network speed.
Why I say that is that I can have a great meter in game for the first 6 or 7 holes, and then the next lot of holes the meter goes bad.. For me it seems to be worst around 3am - 6am my time, and also pretty bad from 7pm - 10pm, my time. Usually I almost always get a good consistent meter late mornings to early arvos (eg 9am - 5pm)..
My computer resource usage doesn't really change much, have a lot of RAM and CPU headroom at all times when playing WGT as I play it with only one window open (in maxthon), and no other open programs, and most if not all non-essential background processes disabled / turned off..
If it helps, I've just accepted that occasional periods of a glitchy meter is just the way it is with WGT. Spent ages trying every suggestion and every flash and browser combination, to no avail. Fortunately the glitches only occur for me less than 10% of the time and I can live with that..
All that being said, computer power and browsers / flash etc may make a difference. But if you have a combo that works for you, just not all the time, then it may well be network or server congestion at WGT's end. That, we can't change, and I suspect given the large number of players, WGT isn't likely to change either..
Hope that helps.