FG 100F - recommended firmware

hi All

just installed my first F series FG (100F).

it comes with firmware 6.2.3 installed.

we experience some SSL VPN issues, disconnect from time to time.

all though there is no packet loss on the link or on the route to the GW.

be said that I think it's a good practice to ask in the community and get recommendations from others' experience.

so, is there a preferred firmware that I should use with this series?

ps

id like the option of sending webhooks triggered by an event, so I would like to stay in 6.2.X or above.

thanks