How to change IP undetectable way?

I want to play online poker on Pokerstars, but it is not possible in the country, where I am now, so I want to change my IP. My main issue is how to change IP so that Pokerstars will have problems detecting it. (It is not a problem logging into my account with other IP, but I will have a problem when Pokerstars detect that I use something to hide my real IP, for example, Shadowsocks or VPN). Also, I will be happy when my internet connection maintains its speed. So to sum it up I do not need something super secure, but rather something hard to detect. Do you have any advice for me?