I'm a new customer and not too clever with internet-related issues, so please forgive me. I recently had broadband installed where I work and the connection is pretty bad. I mainly use it for online meetings via FaceTime and Skype, and it's ok when only one of us uses it, but when someone else at work tries to use it at the same time or uploads something, it becomes almost unusable. The building is an old building with very thick walls, so in the room where the router isn't, I have to use an ethernet cable. Like I say, it's ok when only one of us uses it but really bad when two people try to use it and I'm wondering if I can fix this? We don't have fibre optic in the area (I have fibre optic at home and the difference is noticeable). I read I can manually change channels but I wondered if this is a wise idea (considering I'm pretty clueless on routers and don't want to [-Censored-] the whole thing up) or does the router automatically search for the best channel itself? Is the age of the building and the phone lines causing this issue maybe?
Any help would be much appreciated please, thanks.