Mamba TE stuttering on the firefly v2 mousemat

So I recently bought the razer Firefly v2 mat, I plugged it in and put on my mouse (Mamba TE - 2 years old). But when I started using it I felt a lot and I mean a lot of random stutters. I went to razer synapse 3 and tried calibrating after I tried everything in there nothing worked perfectly. I switched back to my old mat (Sphex v2) and it worked perfectly fine! My sensor is working fine and I had no issues with the mouse until I bought razer firefly. Why is this happening and can anyone help me pls? I'm desperate. Thanks, Oskar