Probably the weakest element on the laptop is the Webcam which can output 720p@30fps. By default the low light performance is not that great but you can improve it considerably by trading frame rate for low light performance.
First install the Video 4 Linux utils:
sudo apt install v4l-utils
Now run the following command (the default is 0)
Now we have reduced the noise level considerably you can play with the sharpness levels 0-7 (the default is 3)