anyone has also issue with using multiple stick on a usb port not working?
Yes, that is common issue. A pair of more of these will easily pull more power than most common hubs can supply. Even a single stick can exceed the capacities of many hubs if the voltage and frequency are increased much.
There's an entire thread dedicated to hubs that work well with these:
https://bitcointalk.org/index.php?topic=1779423.0Good luck, and happy hashing!