Hi,
I've been an Untangle user for a few years now and haven't had many issues (it just works).
That said, I came across a strange issue while getting our office set back up for users to return...
Using Untangle right out of the box (no apps, no QoS) we are seeing high latency on Teams and Xbox Live. Not sure exactly what dslreports.com's speedtest has in correlation with Teams and Xbox but they all three show bad latency (and even a rating of F for bufferbloat on dslreports). We have 1 gigabit symmetrical internet connection from our ISP. ONT between fiber and Untangle (no routing from ONT). Working with UT Support, we found that if we enable QoS/ Bandwidth Control and set in/out bandwidth at 180/180mbits, the issue goes away... Support has been looking into it but no leads so far. Have tried fq_codel and other modes but it doesn't seem to make a difference when trying to get to 1 gigabit symmetrical speeds through Untangle without issue.
I know that our hardware is good, it's an official Untangle appliance (u500). I have tried running pfSense and OPNsense on it just to test/verify components and no issues when running that software. Tried swapping Ethernet cables and even re-installed Untangle several times to rule out config. As mentioned, this issue occurs even when only DHCP is active (no apps). On the most current build (16.2).
Anyone ever heard of or experienced this issue?