I have issues with some keys being hard to press if you don't press directly down on the key and then not registering, and occasionally have issues with words I type getting garbled if I leave the keyboard idle for awhile and start typing again.

No issues, lag..and has great range.

Although I find the keyboard comfortable the lack of instructions is an issue.

As a plain keyboard, it was fine - after the too-slow issue fixed itself.

As much as I appreciate all the good features of this product, my next keyboard/mouse combo might be the Microsoft 5050, although it looks like it may have similar issues.

Cheap but absolutely zero issues.

No more lag or freeze, mouse worked great... all the issues just vanished

( I changed new battery, still doesn't work)Some quality issue

That usually rights the issue

I actually thought it was an issue with Windows 10 slowing down my computer...

Super comfortable and minimal wireless connection issues

The mouse has the opposite problem, no issues with input response but why did they put the advance and retreat buttons on the same side of an ambi-mouse

I purchased this for my business desktop, and I literally have issues every day with it freezing up

Works great I like Logitech products.

The faster i move my mouse across the pad, the less likely I am to make that turn

The I, S, D,T and E letter labels are all missing and D,A, and W are almost gone.