Unable to connect profiler to Hololens, 2017.3p4

Hi All.

I've been fighting with this for a few weeks at this point, to no avail.
Every suggestion I found online on how to fix this doesn't work.

I'll make a development build, with auto connect profiler checked.
The proper capabilities, (InternetClient, InternetClientServer,PrivateNetworkClientServer), are all included.
The device and my computer all sit on the same network, within the same subnet.
Visual studio 17 is used to run in debug on the Hololens.

Once the application starts, Profiler doesn't connect. Trying to connect manually by putting in an IP just ends up with a timeout:

Failed to connect to player ip: 192.168.0.123

UnityEditorInternal.ProfilerDriver:DirectIPConnect(String)

This happens with both 3.5 & 4.6 runtime version. Happens with both IL2CPP (which we use to get around a but in timeline with current version) and .Net

Is there a step I'm missing? We are experiencing performance issues that we must be able and profile on the device.

Edit: I tried running another instance of unity on a different machine, and from there, I can see the actual player come up in the profiler window for selection. I still cannot get it to actually connect, i'm getting the same error, but it seems like some progress.