You could try relaxing the BCs - instead of fully fixing one edge, try applying sort of symmetry BCs (then you can fix one node in the vertical direction if needed). See this thread: Cantilever beam with load at one end - #10 by CrisBab
It’s also always good to solve 1/2, 1/4 or even 1/8 of the model if the geometry, supports, loads and evaluated responses allow the use of symmetry (with composites, you also have to make sure that the layup allows it).