Bests & Worsts Reviews from Amazon

In spite of trying everything recommended on the Logitech and other websites, this keyboard continues to stall, sometimes between words. There doesn't seem to be anything to do except wait (sometimes for several minutes) until it decides to work again. When I'm using QuickBooks, it will stall between transactions. I've tried different USB ports, downloading driver, etc. I don't even want to donate it to Goodwill--no one should go through this frustration.