Mouse lag and audio buzz with Razer Basilisk V2

Hey, i have the complete same issues with mit Razer mouse like the description in this thread. /mouse-lag-and-audio-buzz-with-razer-synapse-3-installed.57714/#post-562194 I´ve aready contacted the Razer support but they didn´t care. The send me a new mouse but i knew before that it was only a driver issue with the pulling rate or Razer Synapse. The Fail didn´t stop when i drop the pulling rate to 125 Hz. I gets better than with 1000 Hz but it is still there. I hope you can help me, this fucks up!!! I have a Razer Keyboard since 5 years an have no issues with it, but the mouse... I am very dissapointed drom the razer support, because they only said i should take a new one from amazon for free but this is makes no sence. Tank you.