Game Physics

[DreamScripters]

Possibly, but I don't know why they would do that for optimization. Its more of a pain if anything and can actually ruin the game if bad enough. Especially the mattress glitch XD. But if you're curios I got the definition off of Wikipedia below.

Physics glitches are errors in a game's physics engine that causes a specific entity, be it a physics object or an NPC (Non-Player Character), to be unintentionally moved to some degree. These kinds of errors can be exploited, unlike many. The chance of a physics error happening can either be entirely random or accidentally caused. Once again, Bethesda’s Skyrim and Fallout games are notorious for this glitch, as it can happen without warning and possibly result in the player being unable to start or complete certain quests due to the quest giver disappearing.