Meters run without connection to WGT, so it's other influences which will make the difference:
- general CPU and memory load,
- LAN load or WLAN issues (use prefer a wired connection),
- memory load due to the "Flash&memory" bug,
- choice of browser,
- details of browser and Flash versions (newest may NOT be best),
- mouse status as named above.
In an RG, you can save the round, close all browser windows and all unneccessary programs, then retry.