How to connect 2 computers + tablet via wifi?

Question

Computer networks

There is an Asus RT-N66U router, it distributes the Internet. The signal level in my room is ~30%.
There are 2 desktop computers, Win7 professional system and iPad
. Required: connect them to the router.
I tried whistles, the signal level is low, constant disconnects. Previously, Dir-320 stood on dd-wrt in access point mode, distributed the Internet via lan to 1 computer, the connection is stable, the speed is also. But, unfortunately, he died.
Questions:
1) what is the best way to connect 2 computers to a router with an acceptable signal?
2) If you take a router and configure it as a repeater for distributing WiFi for the iPad, will it still distribute the Internet via lan to 2 computers?
3) Are there access points with several lan ports? And will she distribute the Internet to 2 computers via lan?
What is the best way to connect for my case?

Answer 1

either buy a more powerful antenna, or stick a twisted pair cable into the lan ports and drag it to the computers. the Internet has to distribute on all interfaces.

Answer 2

pci card with antennas (possibly remote) and there will be happiness.

Answer 3

For starters, I would check the load on the channels and find out which one the router is running on.
Workload can be measured by phone / tablet. There is a wifi analyzer for android, there are similar applications for iOS, but I don’t know the names.
Perhaps the problem is easily solved. If not, then you can make WDS using another access point.