VPN interface on SD-WAN

Hi.

I have a issue with fortigate on a costumer.

The costumer has many officces that access a remote application on Cloud Oracle, the costumer has a Fortigate VM on Cloud Oracle.

I configured SD-WAN with VPN interfaces to communication between offices and Cloud, but we have a probleme with a specified application. The application is access by RemoteApp, when we have only one high latency on communication the connections with remoteapp is losted.

If I remove the interface VPN from SD-WAN and use with static route the issue is solve.

This issue is happen just on Fortigates with firmware version 6.4.2