I left minecraft running overnight and most of today in the background of my laptop. Under normal circustances i dont do this but i forgot i had it running in the background and my computer was in standby mode for most the day. I came back to minecraft and my whole computer being very laggy and i opened task manager and minecraft was useing all my avalible ram it being 10gb and the game was on the title screen. Under normal conditions minecraft tends to max out on my pc at 1-2 gb of ram useage and i dont alocatr 10 gb to it and i had to force close the program and it would not let me get a crash dump file.