Every time I load a game up, It shows a pop up, but the Bricks/Voxels/Connectors, will just stay the same at the number, or increase and decrease. On some instances, it will show the skybox, but not the baseplate.
Happened to me for a long time until it just got fixed somehow. I think it was ROBLOX and not my computer or me.
However, I haven't played games for a long time so I no longer remember how to help you out of this issue, so you'll just have to wait for someone more experienced than me.