Got my surface laptop 3 a week or so ago. It gets ridiculously hot when charging or playing football manager (which is not an intensive game and cheaper laptops can handle it) and makes an annoying popping sound and has a static buzz coming from the right-hand side of the keyboard. The amount of people commenting on this issue without reply from Microsoft is incredibly irritating considering the money these laptops cost.
for what it's worth: i had the same issues with overheating during my first few weeks with the laptop, but now after a couple months of use it rarely gets hot. the buzzing noise is still there though.
i just wish microsoft would allow us to update the intel graphics driver. maybe that would help a bit.
You can update Intel graphics driver starting yesterday.
Use Intel support assistant
https://downloadcenter.intel.com/download/28425/Intel-Driver-Support-Assistant