d3d9 vs d3d11

[spyro]

why is d3d11 so slow compared to d3d9? is it my gpu nvidia 9600gt?
for instance smg2 on intro menu with d3d9 i have 82fps with d3d11 50fps

[DJBarry004]

It´s slower because it doesn´t skip the graphic effects DX9 does and is way more accurate than DX9.

[pauldacheez]

It's actually mostly slower because VideoCommon had so many goddamn workarounds that were needed for D3D9 that only slow D3D11/OpenGL down. Plus, buffer management is the one thing that D3D9 is better at, and buffer management is pretty important for Dolphin. There's a workaround for that (a state tracker that avoids unnecessarily updating buffers when the data hasn't changed) in the works.

[gistix]

For me, OpenGL and D3D11 runs faster, with the same configuration from D3D9, no Idea why, btw, you should use which one runs better on your system.

[AutoFire]

This is a moot discussion anyway, as D3D9 has been removed from the emulator.