Slow internet problems aren’t just due to a weak signal or router issues, it could be something else.
Many household items and devices can interfere with the Internet connection. But the most common reason may be the mirror.
Some large wall mirrors can affect the connection because the mirror is made of a thin layer of metal that can cause interference. Therefore, you should try to move the router at least one meter away from them.
If you can, try to place the router where you need it most. So if its most important purpose is in the office, it’s good to put it there.