IPSEC VTI disable gateway monitoring ?

[Yathus]

Hy,

I created a tunnel with IPSEC VTI with 2 pfsense 2.4.4-p2, everything is working but after some time (maybe 1 minute), it's just drop (no traffic) and i have to restart tunnel.

I disable Gateway monitoring on both side for the VTI Gateway and now my tunnel stay alive "forever".

So my question is : disabling monitoring for gateway is required ? or i have another problem somewhere ?

Thanks

Yathus