@Gertjan Thank you for the reply!
I want to go back and test this again later but it seemed when I ran the tail log in your first command (in ssh) the gui was more responsive. I really had to zip (10-15 consecutive page loads) around the gui with the nginx/system log both visible for it to actually lock up.
I also double checked the unbound log, and manually restarted it to make sure it was catching a start. Unfortunately, the only 'start of service' message I received was the manual restart from the status > services page.
I will add, while zipping through the highest CPU usage of the vm was 4.56%, I don't think that would be an evident issue at the moment but I'm open to suggestions.
Additionally, being that this is a webgui issue. I'm currently using firefox ver: 134.0b10 (64-bit), I switched to beta during the youtube issue.
This does appear on chrome as well.
Outside of browser, I previously had the VM configured with full passover of the realtek (RTL8125) nic for the WAN interface, and a virtIO linux bridge for the LAN adapter. I stood up/rebuilt the pfsense vm, and re-added the config from a backup recently in an attempt to fix this issue, and both adapters are currenly virtIO linux bridge adapters.