Can you try the Canary version and see if it works better?
Can you try going into Emulation - Configure - Graphics and setting the Shader Emulation to CPU?
Also, let me inform you that your GPU is pretty old and may just have issues because of it’s age. I would suggest upgrading your GPU as fast as possible.
That doesn’t look like the Graphics tab from Canary? It should look like this:
I guess you went back to Nightly 
if i set backend on software, the game start but at 2% speed
No need to do that, only set Shader Emulation to CPU.
yes, i make a save of my pc and i try this
with the update i have 4% speed
Does it now work with either the CPU or GPU modes in OpenGL backend?
With CPU the game as 8% speedy and 3fps
And what with GPU mode?
With GPU 15% speed and 4fps
Your GPU is too old for Citra. You will have to buy a new GPU.
ok thanks for your help