"Unresponsive controls" refers to a situation where the buttons, switches, or devices used to operate or control something are not working or not reacting when you try to use them. Full definition
It took me a few hours to beat it, and the only frustration I felt was from unresponsive controls rather than the game's difficulty. (playstationlifestyle.net)
We had to learn the hard way — by fighting unresponsive controls in games like Red Steel and Soul Calibur Legends. (thatvideogameblog.com)
Despite unresponsive controls and average graphics riddled with a jerky frame - rate (elements that would normally kill any racing game's enjoyment) Blazin» Trails delivers a surmountable and fun but challenging struggle for first place. (metacritic.com)