When Surfaces are distorted in OpenGL View Like this, that usually means that your project is far from origin. If you select elements in 3D, the green selection highlight might also be away from the edges of the shape.
If you were modeling far away from the ARCHICAD origin, but you also placed some elements close to it (even if accidentally), then that must be it. Make sure to delete the elements that are far from your model, and/or move your whole model back to the origin. After you do so, you have to save the project, and then close and reopen it, to make the project healthy again.
Here's some more information about far from origin issues:
https://helpcenter.graphisoft.com/troubleshooting/3d-modeling/far-from-origin/
https://helpcenter.graphisoft.com/tips/archicad/modelling/relocate-projects-placed-far-from-the-project-origin-2/
If you have a hard time locating the elements causing the issue, contact your local support for some help.
Daniel Alexander Kovacs
Professional Services Consultant
GRAPHISOFT
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