Severe instability of 2.x builds

Hi, I'm a long time Mapfactor user and since version 2.X I have serious problem with application stability.

My current phone is Asus Zenfone 5, Android 4.3, 2GB RAM and Intel Atom Z2560 SoC.
Stock software 1.18.40.10, Kernel 3.4.43. Without Google Play Services (framework is present, Google Play store works)

Application can crash anytime for no apparent reason. On early 2.0.x builds from Google Play it could barely download map data due to constant crashing.

Today I've tested version 2.1.56 and still it sooner or later crashes. Version 2.0.33 from Google Play, marked as stable on your server, isn't any better.
Enabling hardware accelerated renderer only makes things much worse. Everything works, but is very unstable.

Version 1.6.20 is the last stable version and the one I'm currently using.
It works like a charm, rock solid, but I bought premium features mega pack and wanted to upgrade :) And restarting app while driving a car is somewhat dangerous  :P

I've never had any problems with 1.x series on any phone. I even have on old PXA270 Windows Mobile running MapFactor :D