There is much to consider when it comes to getting the best performance from your wireless network. Firstly let's consider the possible problems that could be hindering your network.
To begin with lets actually confirm it is a problem with your wifi and not your internet in general, to do this plug a network cable direct to your router to either your PC or Laptop computer and run a speed test on your connection. There are many sites that can do this test for you I would suggest just run a Google search for speed test any first page result will be fine. Run the same test both using the wifi and local cable.
If the connection is bad even when cabled locally
If the connection is fine when local and bad on wifi at
If the connection is fine at close range on wifi but
degrades quickly as you move further away.
So lets look at possible causes for weak signals over short distance (short being inside a normal size home)
Walls, sounds obvious but walls can cause "some" hindrance to signal strength. Wood and plasterboard and even plastic cause little trouble so the usual indoor walls are usually fine. If you are sharing with a neighbour however brick and concrete provide more of a problem. If this is the case you may want to be smart and place thr router as close to the wall as possible or even better near a window in line of sight of the sharing home. Glass is also very signal friendly.
Solar panels, people are not usually told in my experience when getting solar panels fitted that it can cause havoc with your wireless devices. I have seen cases where a user has called me due to weak wifi and upon visiting we found his neighbour had recently had solar panels fitted and this killed his network. In some cases not a lot could be done in other moving the router or wireless amplifiers made the situation tolerable. If this is the case trial and error is best we can suggest, try a few different router locations.
If your still having problems try a router with higher broadcast spectrum, the newer routers use 5Ghz using a router and network card both running on the newest technology can make a massive difference.