Parts disappearing when I move away but reappear when I'm close (studio)

So, I’ve been expierencing this weird bug for quite a while now, but I finally want to ask for your help. Thin parts disappear when I move away from it. However, it reappears when I move close to the part.
Here’s an example:

This happens all of the time, both in studio and ROBLOX. Does anyone know how to fix this issue?

This is because you’re moving the floor too close to another ground

it applies to Area 51 Game once when i was playing normally and this also happens in my own Area 51

you might move the floor higher and see if it disappears again

if it’s not fixed then it’s supposed to be Graphics level

Thanks, I’ll try it out. I do not think it’s #2 because I have studios and game graphics to the max.

*UPDATE FOR ME
I have the same problem I REALLY WISH ROBLOX COULD FIX THIS