Welcome,
I have a problem with mouse lag at ~ 100% CPU load, which disappears when turned off SonicStudio. I struggled with this for some time, but off SonicStudio helps. I am disappointed, because not enough that I spent a lot of money on my Ranger, I still can't use any software, which is attached to it, because with EVERY is a problem! Even updates come only on Windows 10 ...
Spec:
CPU - i5 6600k
Memory - Corsair Vengeance LPX 3000MHz
GPU - GTX 970 MSI
Mobo - Asus Maximus VIII Ranger
PSU - XFX XTR 550W
SSD - Crucial MX200
OS - Windows 8.1/7 both 64bit
OC doesn't change anything.