Suat

You are definitely not alone. I have exactly the same problems and it is utterly frustrating. I cannot use my "wireless" mouse in wireless mode (not with the dongle and not with Bluetooth). When I use it with the provided USB cable, I don't have any of those problems. At first everything was ok. The problems started to happen with the latest firmware upgrade (v1.9.85). Since it is also not working with Bluetooth, I do not think that we have a frequency interference problem here. When I switch between USB ports, it works for a while (seconds, minutes at best), then exactly the same tracking problems start as described by @JackJeebs. Uninstalling and re-installing devices, software as well as the latest AMD chipset drivers did not help. Also closing the icue software (completely) doesn't help either. I have practically tried everything I could. I suspect the dongle and/or mouse firmware. Urgent action needed or else I will give this mouse back and switch to good old logitech.