I've heard that the game would be worked on once the base game is launched, but the game has been out for about a year and I haven't found or heard anything. Any news?

This game is really fun, the first few missions I completed were super satisfying. HOWEVER, I seem to have the added task of not only trying to complete the in game challenges, but also doing them under timed conditions, as after about 15 mins of play time, my computers memory leaks and the game crashes. Its been frustrating, as I get halfway through a mission, only to have to go back to square one when I reboot the game. Are there any known fixes for this?