Dolphin Wii Stutter

[silverspring]

Really not sure what's up here. May it's my system or it's normal.
I'm running Windows 10, Ryzen 2600 at 3.8GHz, 16GB ram and an Nvidia 1660ti.

Super Smash Bros Brawl (Wii) runs pretty much 60fps, however there is the occasional stutter. The video below shows this. Watch before the actual gameplay action loads... a few stutters, probably down to around 1 to 5 fps and stuttering audio. The fps goes back to 60fps soon after. Now there are the occasional stutters and freezes whist playing the game, however I thought this couldn't be a shader issue as I am am using asynchronous (ubershaders). Internal resolution is at 4x (2560 x 2112), however the stutters still occur in exactly the same places no matter what the resolution. I've played around with all graphic settings, tried different backends from opengl, vulkan to d3d - all the same problem



I don't understand how the stutters all occur in the same spots. Most of the other wii games run ok and there are no problems with gamecube. I've read about these stutter slow downs before, but haven't really noted any solution. Is it my CPU? I've heard AMD's aren't the best for emulation. I've checked my temperatures whilst running the games, and everything is well under so throttling isn't the reason.

[KHg8m3r]

Sounds like a shader compilation problems. Go to Graphics and change the shader compilation to asynchronous

[silverspring]

Yeah I thought it was a shader compilation problem, but I don't think it can be. I'm already on asynchronous. I don't have vsync on and I set everything in the nvidia control panel to ensure the dolphin application over-rides the settings there.
It's very strange. It doesn't matter what settings or combination of settings I use in dolphin, the stutters happen at exactly the same points in the game. I know other people on Ryzen CPUs have had problems, I wonder if this is a wider problem

[haze_1986]

Did you turn on "compile shaders before starting"?

[JMC47]

Are you running the game on a slow harddrive? It could be harddrive loading issues. I've seen that happen on certain drives with no real rhyme or reason.

[silverspring]

Did you turn on "compile shaders before starting"?

Yeah i've tried it with this option on - it's just the same as if it is off

[silverspring]

Are you running the game on a slow harddrive?  It could be harddrive loading issues.  I've seen that happen on certain drives with no real rhyme or reason.

Dolphin is on my SSD, the games are on the HDD, however I have tried moving the game over to my SSD and play it from there - same problem.

It's almost like the shader compilation settings are being ignored. The same stutter happens in the same places, no matter what settings are used. I've tried all 4 of them, Synchronous, Asynchronous (Ubershaders), Synchronous (Ubershaders) and Asynchronous (Skip Drawing). All give exactly the same performance on my system.

I think I've tried 100s of combinations of settings, all give the same stutter at the same points.

[Silent Hell]

I get the same issues on my Ryzen 1600 when using OpenGL and rarely on D3D11. I figured Async Ubershaders just weren't perfect and shit just happens.

[mbc07]

What video backends have you tried? AFAIK NVIDIA GPUs still have occasional shader compilation stuttering on OpenGL even with async shaders enabled...

[silverspring]

What video backends have you tried? AFAIK NVIDIA GPUs still have occasional shader compilation stuttering on OpenGL even with async shaders enabled...

I've tried all the backends. There is no difference between any of them.
I think it's probably just the Ryzen architecture. I guess there's much fewer problems with Intel.