Unable to jam with more than two participants

[Dimitri Muskens]

I believe the responder is saying do NOT do any port forwarding or other port setting changes, the theory being that it may not help, and may in fact make things worse.

I changed the settings under "Application Preferences".
I unchecked "Always use the same set of UDP ports".
It improved the stability. instead of cra$ng every 5minutes it crashed 5 times in one hour.

Is there any other settings within JKZ or on the computer which needs to be changed?

>>>
Good!
Now, having your computer use a static IP-address in your network might help.
Make sure you have UPnP enabled in your router.
Never use WiFi - actually switch it OFF.
Do not use a firewall for the jkz connection - hardware or software.
If you made port forwards in your router for jkz - disable them.

D./