I never used VMMap, so it's possible that I say something wrong here. If so, just ignore my comment.
But it looks like your game uses about 1.5 GBytes of memory. In my experience this is too much for Acknex to handle. It should be much lower.
From my knowledge this is true. Somewhere around ~1.6 GB the engine runs out of memory.
One thing you can try is look at the memory usage in the taskmanager and how it increases when playing the game. It might keep increasing at points like level loads but should settle at some point (for example if you've loaded every asset once). If it doesn't there might be some memory leak.
Note that I think the engine uses custom memory management with pools for better performance. This can mean that even if some of the memory isn't used anymore the application keeps holding onto it for upcoming allocations. So don't get confused if the memory usage doesn't decrease when you expect it.
