tls mode and packet Inspection/obfuscation

Hi:
    I am using openvpn shared key mode for site to site connection.
since it will be removed in the future so I am thinking about
replacing it.

    I need to connect to China. the p2p mode seems fine for China
Great Firewall.
currently desktop users with "tls-crypt" can connect but I don't know
if the traffic can hold long time for site to site connection.

   will tls mode need obfuscation patch compared to p2p mode? is it
easier for deep packet inspection?

   thanks a lot for help!