Computer connects to the wrong router

Computer connects to the wrong router

I have 2 routers connected together and multiple computers connected to
each router. (see image)
The problem is that when I connect a computer to Router 1 and let it get
the IP automatically, it connects to the Router 2 (default gateway, DHCP
and DNS are set to 192.168.1.117).
So for every computer that uses my network I need to set IP, default
gateway and DNS server addresses manually. I would like to get IPs and all
setting set automatically. If I disconnect Router 2 everything works ok.
Router 1 is Linksys WRT54G and Router 2 is TP-LINK TL-WR741N.