Play on ps4 my friends on pc and xbox i can't hear them and they can't hear me. For me NAT type is strictly open and for those of nat type. Can it be because of it?
You should have Nat type Open or Moderate. Strict is not a good thing, not even for gaming.
I used to have a strict diet, I couldn't talk or play with anyone.
You need to check your router settings.
Try the Xbox app. PC and Xbox players already have the party functions in it. All you have to do is create an Xbox Live account, add your people there as friends and then start a party and invite them or join their parties.
An Xbox Live Party via Windows 10 PC or Xbox app on Android / IOS does NOT require an Xbox Live Gold membership. This is only required on Xbox One consoles. Creating an ordinary Xbox account is also free. You can also change your gamertag once for free. Make the change only if the Internet is good, if bad renaming fails, Xbox may still consider it changed.
