Emulator

Game Name?

(F-Zero but appears to happen in all)

Game ID? (right click the game in the game list, properties, info tab)

GFZE01

MD5 Hash? (right click the game in the game list, properties, info tab, MD5 Hash: Compute)

b3e4932731c63b98f0617e6764cc364d

What's the problem? Describe what went wrong.

Until now Dolphin D3D11 running incredibly well since Win10 upgrade, virtually zero stutter esp in F-Zero, game I know best for it.

Following recent Dolphin update to latest build 4.0-8070, this is no longer case (nVidia drivers also updated to latest 358.50) -bizarrely all Dolohin shader cache files are now 10K(!) (prev up to gigabyte range)

What steps will reproduce the problem?

Play any game in D3D (OGL always stutters).

Which versions of Dolphin did you test on? Does using an older version of Dolphin solve your issue? If yes, which versions of Dolphin used to work?

In 8070. Have tried going back to older versions up to 7784, no joy (prev fine).

What are your PC specifications? (CPU, GPU, Operating System, more)

i7 980x, GTX970, Win10

Is there any other relevant information? (e.g. logs, screenshots,
configuration files)

-not sure but can supply!