Load into world: Mouse spazzing out

[WalterP]

So I just downloaded Blightfall for the first time. I have a problem with RAM, so I downloaded the 64 bit java version. It finally worked, I assigned 6 GB of RAM to the game, and I got into it. I spawn in and my mouse is automatically pointed upwards, the sensitivity was jacked up to something incredible, even though it only showed 100% in the menu. So I turned it all the way down to *yawn* and I could now at least see what i was looking at, but it was super glitchy and spasmatic and would reset every once in a while to the upwards position. This is not a problem with my mouse either, as it works just fine on the desktop, and in CS:GO. Anyone know of a solution to this problem? Currently reinstalling, going to set RAM to 8GB.