Why am I seeing exceptions thrown by WinRT when using Hololens 2?

So as soon as I try adding some objects to the default Hololens 2 project (e.g. a character posed with an animation), I start seeing WinRT thrown exceptions continuously in my Visual Studio 2015 C++ project that I’m running the Unreal Editor from:

Exception thrown at 0x00007FFA1A4A4B89 (KernelBase.dll) in UE4Editor.exe: WinRT originate error - 0x80070032 : 'Method not supported'.
Exception thrown at 0x00007FFA1A4A4B89 in UE4Editor.exe: Microsoft C++ exception: winrt::hresult_error at memory location 0x000000000177A380.
Exception thrown at 0x00007FFA1A4A4B89 in UE4Editor.exe: Microsoft C++ exception: [rethrow] at memory location 0x0000000000000000.
Exception thrown at 0x00007FFA1A4A4B89 in UE4Editor.exe: Microsoft C++ exception: winrt::hresult_error at memory location 0x000000000177A380.
Exception thrown at 0x00007FFA1A4A4B89 in UE4Editor.exe: Microsoft C++ exception: [rethrow] at memory location 0x0000000000000000.
Exception thrown at 0x00007FFA1A4A4B89 in UE4Editor.exe: Microsoft C++ exception: winrt::hresult_error at memory location 0x000000000177AEA0.

While I can ignore these exceptions, I’m seeing juddery performance as well, and I’m wondering if it’s related to these exceptions.

Anyone know exactly why they’re appearing, and if this is a bug that the Epic staff might be looking into?