There is only one (current) version of Skype, and latency did not change during the years. Probably you have some other problem (e.g., overloaded internet connection) which gives you the latency issues.
There is only one (current) version of Skype, and latency did not change during the years. Probably you have some other problem (e.g., overloaded internet connection) which gives you the latency issues.