I use this for my setup:
#Offloading settings
set system offload hwnat disable
set system offload ipsec enable
set system offload ipv4 forwarding enable
set system offload ipv4 gre enable
set system offload ipv4 pppoe enable
set system offload ipv4 vlan enable
set system offload ipv6 forwarding enable
set system offload ipv6 pppoe enable
set system offload ipv6 vlan disable
set system syslog global facility all level notice
set system syslog global facility protocols level debug
set system traffic-analysis dpi enable
set system traffic-analysis export enable