Does anyone know what determines the frequency of these checks?- there seems to be a long gap between mine and was wondering if there was a way we can control the frequency?
The best you can do is a fast VPS for your account, lower than 3-5ms is great!
You don't have control over the other factors.
I do use and pay for the fast VPS from MQL. But want to know what initiates the ping signal check on these VPS.
I don't know.