Inadequate computer optimization will interrupt the flash code and cause the meter and anything else in this game (which is flash oriented), to stutter or skip.
Simply pause the back-swing momentarily, or wait for the club name to change in the lower left corner during ones game, and you'll find the meter is smoother then you thought.
It sad to say, but cheap computers containing cheap hardware will result in this game, or any other flash based web sites to perform poorly. I'm sure I'll get persecuted for this statement, but its true. There isn't a one time fix-all for all meters troubles, on all computers.
Not all computer hardware is created equal.
WGT isn't 100% responsible for people experiencing meter problems during game-play. It something that will always plague the game until Adobe flash rids itself of bugs.