if wireless mouse is slow, open cmdline.txt
sudo nano /boot/cmdline.txt
add at the end of the line usbhid.mousepoll=0 or 1
console=serial0,115200 console=tty1 root=PARTUUID=d9b3f436-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait quiet splash plymouth.ignore-serial-consoles usbhid.mousepoll=0