Skyrim - Memory Patch

A modder by the name of sheson has released a new memory patch that allows Skyrim to fix infinite loading screens, and other memory related CTD freezes.

Time for Skyrim Memory Patch 3.0

It has been a while since the first memory patch that fixed 4GB LAA that made it into the official game. Thanks to Boris we have the second memory patch ENBoost taking care of textures not wasting main memory anymore. In this naming tradition this third memory patch will allow Skyrim to use that available space right from the start to fix ILS (infinite loading screen) without side effects and other memory related CTD (crashes to desktop) or freezes. After many hours of peeking and poking it turns out there is a simple fix and one has to wonder why this is not something that is implemented as an option or parameter for the PC version of the game.

How it works

When tesv.exe is started it allocates two 256MB blocks of memory. When the first block gets full, the engine will allocate more blocks. This can cause the known troubles. Thankfully, by telling the engine to request a bigger block from the start it magically makes use of it without any further ado. This isn't the case with the second block. Thankfully again, the second block does not fill up as quickly and once it is full the engine does not trip over itself when allocating more blocks.

To make the engine allocate a larger block of memory it needs to be patched. This needs to happen very early in the process. This can not be done by a SKSE plugin because they are executed much later. However, SKSE loader already patches tesv.exe before the game starts and since SKSE sources are provided adding the patch is straight forward.