Minecraft uses more memory than before

A day ago it seems that my minecraft is now slower so I decided to open the F3 and I saw that minecraft had around 47-61 FPS this made me worry that my computer is mid-range so I wanted to see the next day if it was only a few drops of FPS or it was that I needed to clean it, the next day I was still with FPS drops then I cleaned it but still went on and on then I came to the conclusion that some developer when I fix a bug created another bug, although I thought that It was the least likely, but here is a picture, thank you.