why is mstsc crashing when using directX video in browser: TOR, Chrome, et al

using RDP on windows 10. RDP crashes when rendering directX video in any browser.

exception: Faulting application name: mstsc.exe, version: 10.0.15063.0, time stamp: 0x57950623 Faulting module name: d3d11.dll, version: 10.0.15063.0, time stamp: 0x6a789089 Exception code: 0xc0000005 Fault offset: 0x00000000000d52df Faulting process id: 0x2654 Faulting application start time: 0x01d3686b519f9468 Faulting application path: C:\WINDOWS\system32\mstsc.exe Faulting module path: C:\WINDOWS\system32\d3d11.dll Report Id: 42d43329-f67e-4e1d-a7f8-3fd76e560a47 Faulting package full name: Faulting package-relative application ID:

windbg analysis:

FAULTING_IP: d3d11!NDXGI::CDevice::SignalSynchronizationObjectCB+8f 00007ffc`e9a852df 8b4608 mov eax,dword ptr [rsi+8]

ExceptionAddress: 00007ffce9a852df (d3d11!NDXGI::CDevice::SignalSynchronizationObjectCB+0x000000000000008f) ExceptionCode: c0000005 (Access violation) ExceptionFlags: 00000000 NumberParameters: 2 Parameter[0]: 0000000000000000 Parameter[1]: 0000000000000008 Attempt to read from address 0000000000000008

STACK_TEXT:
000000fc8c0fd300 00007ffcddb43321 : 000001ff00000000 00000000f0ef0f20 000002c48fbb00c0 000002c49a7fca90 : d3d11!NDXGI::CDevice::SignalSynchronizationObjectCB+0x8f 000000fc8c0fd400 000001ff00000000 : 00000000f0ef0f20 000002c48fbb00c0 000002c49a7fca90 0000000000000000 : atidxx64+0x63321 000000fc8c0fd408 00000000f0ef0f20 : 000002c48fbb00c0 000002c49a7fca90 0000000000000000 8000444000000002 : 0x000001ff00000000 000000fc8c0fd410 000002c48fbb00c0 : 000002c49a7fca90 0000000000000000 8000444000000002 0000000080004440 : 0xf0ef0f20 000000fc8c0fd418 000002c49a7fca90 : 0000000000000000 8000444000000002 0000000080004440 0000000000000000 : 0x000002c48fbb00c0 000000fc8c0fd420 0000000000000000 : 8000444000000002 0000000080004440 0000000000000000 0000000000000000 : 0x000002c4`9a7fca90