Random objects vanishing from viewport - Not clipping settings

Hi all,
I'm having an issue with Maya 2024, where I have random models vanish in the perspective view in a scene. They are visible in the render and I have reset the clip planes near and far on my camera.

I have dozens of objects (all low poly boxes at the moment) in the scene and the scale is small (cm sized objects)

I will be working on something (lets call it Wall_001) and suddenly another object will just pop out of existence. It will return later if I work on something else. But at times inserting an edge loop or changing the visibility of an unrelated display layer will make something vanish, it can be anything that causes the view to fritz out.

If I save the scene and reopen it, any randomly vanished object will still be gone. If I run the animation timeline playhead it might come back or it might not.

I'm running an i9 workstation with 64Gb Ram and a 4060 Gfx card with updated drivers. The scene is pathetically small (5000ish faces currently) and while I can work around the various vanishing objects (they simply animate down to the floor in a construction example animation) I'm concerned there is either a bigger issue on the horizon or a missing object is going to be where its not supposed to be when it comes to the final render.

Any thoughts, suggestions or advice much appreciated.