Simconnect and online flying

I have been flying online for a long time without any issue, having Ivap installed on a networked laptop as well as ASE. Recently I have started to have an issue: I cannot see other aircraft online around me (neither visually nor on TCAS), whilst they see me ok (aircraft and correct livery). I have read somewhere it might be a Simconnect issue caused by a sort of "congestion" of data between FSX PC and remote laptop (it looks like Ivap and ASE simultaneously tend to "clog" simconnect. Can anyone confirm this theory and, in case, suggest a fix ?

Thanks

Regards