Bluetooth shares some of the same frequency band space as wifi.
I would try changing the frequency band your wifi router uses, the 3 non-interfering channels are 1, 6, 11.
Now you also need to check and see what your neighbors are using because you want to be the least interfering channel from them as well. You can download a wifi analyzer app on your android or iOS device to see what bands are the most congested. Anything that is bellow -85 dBm is not a concern, you want to stay away from any channel that a neighbor is using that has a signal -60 or higher.
Depending on model of laptop another option would be to upgrade to 5ghz band. On most laptops with a removable cover the wifi chip can be changed easily in 5 minutes or less...