I have had good luck with 1 wire but only after careful attention to the wiring itself. Star topology can work fine for several sensors, but daisy chain is important for less trouble, as mentioned.
Wiring comments: wiring is the most important thing.
Use a twisted pair cable (or twist your single conductor wires). Cat5 or telephone wire or similar works well. Solder all connections in the daisy chains or use wire nuts or terminal blocks, or other connectors. Do not just hand twist.
Your ground and + wires to the sensors should be connected directly to the board terminal closest to the power supply. Don't use skinny jumper wires or connect to a different convenient spot on the board, or to some other ground or +5 device connected to the board. (Yes, all +5 and ground terminals are not 'the same' when it comes to analog circuits.)
Don't run the wires in a bundle or nearby other wiring.
A lower value pull-up resistor is easy to try and may help. Another trick is adding a 100 ohm resistor in series where the 1-wire signal line connects to the board. (Disconnect wire from board, connect resistor to board, connect wire to resistor.)