Now I can use madVR on win10 with SVP GPU acceleration!
But it is not simple. 
Used: Radeon R9 285 with Crimson 16.1.1 Beta, Win10 (build 10586), SVP 4.0.0.60, madVR 0.90.4, MPC-HC 1.7.10.
The trick is to change renderer without closing Player window:
1) Open with EVR: in MPC-HC - menu View - Options - Output - choose EVR custom - open video - see smooth playback
2) Change to madVR: in MPC-HC - menu View - Options - Output - choose madVR - reopen video
If open video straight with madVR I still get error:
WARNING: Following frames may be wrong.
amdocl!clSetKernelExecInfo+0x2787b
amdocl!clSetKernelExecInfo+0x27818
amdocl!clSetKernelExecInfo+0x269c7
amdocl!clSetKernelExecInfo+0x254bf
amdocl!clSetKernelExecInfo+0x5958
amdocl!clSetKernelExecInfo+0x14ac
amdocl!clSetKernelExecInfo+0x16e9c
kernel32!BaseThreadInitThunk+0x24
ntdll!__RtlUserThreadStart+0x2f
ntdll!_RtlUserThreadStart+0x1b
Youtube step-by-step: https://youtu.be/OXc-fmHt838