Issue connecting gui over VPN (was working)

I'm having a very odd issue.  I am running 1.9.0 on an EdgeRouter X.  I have L2TP over IPSec VPN setup and it has worked great for a long time.  Suddenly about mid last week when I connect to VPN I'm having 2 issues.

1) My connection hiccups, performance across the VPN seems to have noticeably decreased.  Oddly whatever is happening causes my ssh sessions to the router to hang and xrdp or vnc sessions to a Linux box behind the firewall to hang as well.  VNC to other devices on network seem to work fine as well as ssh, it just seems to be only the router and the Linux box that hang up and don't recover.  Only message I've ever gotten is when trying to show the configuration, I got disconnected with this message.  ":Bad packet length 2074577207.
ssh_dispatch_run_fatal: Connection to X.X.50.254 port 22: Connection corrupted".  Note: this issue only seems to occur over VPN, if I ssh into a Mac and then into the router (making the connection local) I have no issues showing the configuration.

2) Though I can ssh into the router's local IP I can't get to the gui.  It doesn't fail or timeout, it simply sits trying to load.  I checked and have the correct listening IPs and ports configured under gui and this was working just fine before mid last week.

I haven't changed anything with routing or Firewall ports, only thing I've made some modifications to is advanced QoS, though I don't see how any of that could be effecting it.  For kicks I reverted back to a previous backup from before the issue occurred but it did not fix the issue.  I thought maybe it was something with the device I was connecting from so I tried multiple devices with the same results.  I tried from multiple different networks but still, same issue.  I wondered if it could be something with my ISP but I can't understand how something they did could possibly effect specific IPs and ports on a tunneled connection.

Config attached