Memory leak/crash

As suggested on Steam forum, I'm posting my crash issue here.

The game uses about 3-4gb of RAM (with about 7-8gb RAM allocated) when I'm starting up the game and after 2-3 hours of playing it crashes because it runs out of memory.
I've tried setting the texture quality to 50% and had the RAM usage up to 10-11gb after about 3 hours of play.

The latest crash only took 1 hour into level 7 of Pet Dungeon.

So far I've experienced the issues on Pet Dungeon level 5, 6 and 7.
I completed the first 4 levels on high settings before update 2.0 without any issues.

OS: Windows 7, 64-bit
CPU: Intel Core i7-4790K
GFX: Nvidia Geforce GTX 970 (latest 397.64 drivers)
RAM: 16gb
Game version: Latest Steam version

I've attached a zip file with output_log.txt; DxDiag; Crash report and a screenshot of my RAM usage during play.

Files.zip