Are your graphic issues exactly the same or do they look a bit different?
There are issues in general with AMD and Intel GPUs on this particular manner:
UPDATE (4/2/2018) New update to the hardware renderer! Some AMD driver crashes are fixed in the latest Canary build - try it out and let us know if it helps!
For those of you who are experiencing issues with Canary builds, we are aware that the new GPU option for Shader Emulation is causing issues with some AMD and Intel GPUs. This new feature is still in review and is work-in-progress which is why it is only found in Canary, an experimental testing ground.
You may experience blackscreens and/…
You could also try to update your graphics driver if they are not up to date:
Other than that there is not much left besides waiting for Citra to further progress and potentially fixing this issues.