In order for us to provide better support, we need to see the log generated by Citra. This guide will walk you through how you can obtain the log file: How to Upload the Log File.
The log file is incomplete. Make sure you follow the steps carefully:
Open Citra, then go to File>Open Citra Folder and open up the log folder. Now keep that open in the background.
Launch your game and encounter the problem; crash/slowdown/glitch and close citra if it doesn’t do so by itself. Do not restart citra as that will wipe the log of important information!
Do you have a graphics card in your computer or do you only have the integrated graphics?
You can check what you have in Device Manager under Display adapters.