This is kind of a cross-post from one of the support forums… thought it might be worth putting out there for a larger audience.
Picked up a Logitech G604 Lightspeed on sale for 50% off a few days ago, and it’s a solid mouse so far, but it has a bit of a caveat…
As it turns out, the Logitech G Hub software used to configure the mouse stays open in the background and can randomly start consuming ~120% CPU (1¼ cores) for absolutely no reason, which can cause stuttering in demanding software like WoW, especially on dual or quad core machines, and on laptops will burn through battery much faster than necessary even on 6 and 8 core machines where the performance impact of having a core pegged is more limited.
The fix for this is to load the mouse’s configurations into its onboard memory and disable “launch at startup” in G Hub’s settings. After you do this, most of the mouse’s features will still work but the buggy software won’t stay open in the background and eat your CPU.
So yeah, if you’re using manufacturer software to config your KB/mouse/etc, it might be worth figuring out if you actually need it and if you do, periodically checking to make sure it’s not misbehaving. You could be leaving performance on the table without even knowing it.