Is Warframe slowing down my laptop?

I don't know why that was a problem, considering I had 7.62 GB free (7% of the SSD), but since cleaning the drive, giving Acer C: 9.06 GB free, I suddenly saw the speed go way up! Thank you so much for referring me to that website. From this, I take away the idea that it's probably best if you keep about 10% of any SSD free.