RB750GL plex firewall rules

I am very new to configuring a mikrotik firewall. I have successfully chages its lan ip and dhcp pool. I run a plex server on my lan. Plex requires tcp port 32400 9myplex) and tcp 5353 (ios device).

So I created nat rules to connect. I successfully connected utilizing myplex. The issue I am having is that when I attempt to start a movie it just states loading. I am thinking there is an outbound issue.

This is how I setup the nat rule

chain=dstnat

dst port=32400

In interface= ether1 gateway (stock config)

action= dst-nat
to address=192.168.. (my plex server)
to ports=32400

Do I need to add another rule in order for plex to function properly. I had this functioning properly in my old router so I know my plex server streams fine.

Thanks for any help

post a diagram of how the devices are connected (including the ports they’re plugged in)