Does anyone meet this problem?

[_Riddle1]

A funny situation was found when I used the PPSSPP to play YS7 on my PC.When fighting,I found the memory footprint was about 200M,a normal number.But I began a new game and the game run,I found somthing abnormal that the memory footprint was greater than 2GB and still increased!!!Then when I disabled the Buffered Rendering,I found the memory footprint won't increase.So is it a new bug?