veeam

I am running a ESX 7 server with a couple of VM's. I also use vCenter and VeeAM. Running on a SM X9SRL-F, 2690V2, 192GB and and SSD at the moment. Will transfer to synology connect by a 10Gbit Mellanox (SCSI). My problem is when i create a backup of my PFSense VM, after 20 minutes (give of...