XCP-ng Plex buffering Issue (wan only)

[redalert11]

background...

when using my vm on XCP-ng plex connections on my wan will buffer. when i use my tplink archer C8 router everything works correctly.
*note i have disabled hardware checksum offloading under System>Advanced, Networking

hardware:

• Dell R710
• 2 - x5680
• 128 gigs of ram
• integrated broadcom 4x 1gig and an intel 2 port 1 gig nic

Network Diagram

i am using the intel nic ports for my pfsense vm. port 1 Wan and port 2 Lan.

plex is a vm that is hosted on the Dell R710. it is connected to the network using one of the broadcom ports. all lan ports go to a 1 gig un-managed switch. i'm using 1 port per vm.

any ideas on what my issue is??? i'm currently looking into passing my nics through to the vm. but i have not been able to figure it out so far...