I think you're running into a limitation on how the game computes the LOD (level of detail, when to render meshes (of units, props)) The same will likely apply to elements (effects, beams). As ZLO mentions, pushing these console commands cause artifacts. In 2006 (over 20 years ago!) these type of resolutions were unthinkable. It's not ideal, but one solution is to run in windowed mode and reduce the resolution?