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)

v4l2-ctl --set-ctrl=exposure_auto_priority=1

Now we have reduced the noise level considerably you can play with the sharpness levels 0-7 (the default is 3)

v4l2-ctl --set-ctrl=sharpness=5