Is it cutting out when you're using it or when the screen goes off? (like is it cutting out if you are streaming something, or only if it goes idle)
I noticed that the transformer is pretty quick to disconnect from the internet once my screen goes off, but I haven't had any issues with it disconnecting when I needed it. You can change the wifi settings so that it will always stay on, but this will kill your battery since the device will never go to sleep.
If you're having issues with it disconnecting when the screen is on, try erasing that network from the tablet memory and then resetting it.
Also, do you have any Mac's connected to your wifi network? I always notice when my brother visits with his macbook pro it plays hell with my wifi connection on other devices. I have no idea why this is.