The column Async must also be used to check if the network is LAN synchronization capable. You can see in the picture that we have many PTP threshold exceeded (13379) but there is no Synchronization loss.
Theoretical it would not provide problems. But you can expect that if the PTP deviation is getting worse, it will result in synchronization loss.
You should fix the PTP deviation for this base station to avoid complaints later.
Gigaset can not guarantee seamless working system if the values exceed the by Gigaset provided requirements. Support can't be provided if the network is not LAN capable.