Mouse freezing up randomly after few seconds it will work again with a higher sesitivity then back to normal for a time

Was playing a game called Xonotic when this first started to happen. my mouse is a wired one the Razer deathadder v2 mini I fist used about a year ago is my favorite mouse and I dont have any more because I gave my old mouse to my friend for playing. If you have had this issue please help.