I need Tether for latency sensitive applications. When I ping a server, the times look something like this:
350ms
350ms
350ms
350ms
900ms
350ms
350ms
350ms
350ms
900ms
and so on. 350ms is slow, but fine, but I can't keep having those 900ms spikes every few seconds. This problem appears to be worse at certain times during the day, happens on multiple Blackberries using different carriers, and does not occur on Android or Windows Mobile devices running PDANet that I have tested in the same location on the same carriers.
Since Tether is utilizing the cell carrier services and via Blackberry BIS/BES infrastructure, you will notice higher latency then if you are connected via cell data infrastructure directly, such as carrier's DUN services. What you are listed are typical..