Mouse issue

[The Savage]

So I've got a brand-new mouse, which you plug to the USB port. The problem is that mouse seemingly tend to disconnect or turn off during usage - but also lags a lot during usage. At first, I thought that's battery ( those are AAA Rechargeable Batteries) issue, but there's no way a wireless mouse would be so much powerhungry (fresh recharge and one hour?). Additionally, I plugged it out from the backside USB port to the front panel, with little avail.

Right now, it's connected to the backside USB port through USB extension and it seemingly works better.
Edit: it doesn't. Lag is still present.

What could be issue of that? Might that be another wireless device that would cause problems (X360 Controller)?

Item in question:
OMEGA Wireless 2.4 GHz Optical Mouse