What does this mean? (server building issue)

Have I reached a memory issue or is it an oxide bug?

I can place foundations down, but walls and pillars just get destroyed straight away on placement.

A server restart fixes it temporarily for about an hour before it happens again. RPG's also shoot through the wall instead of hitting the wall. Same for C4 placement.

Anyone else getting this weird issue? - i tried unloading all plugins (except oxide and RUSTIO) but still happening