Thanks for your reply Ukko. The over 20% CPU was at peak what I noticed while monitoring the CPU usage. That peak usually occurs when Key is hidden in to background and the Task Manager is opened, the CPU load of Key fluctuates between 17-20% for 10 seconds after opening Task Manager. The real problem is, however, that the CPU load almost constantly stays in the range of approx. 2 and 6% when Key is just unlocked and window open even when not really using it in any way with the UI and not doing anything else on the computer either. Also the CPU utilization while locked and closed is needlessly high as I explained before. This may not seem like much, but it clearly seems to have an impact on the battery life of the said computer. It certainly is no probem to just quit the Key totally to avoid it loading the CPU unnecessarily and draining the battery, but in my opinion considering the nature of F-Secure Key, it should not be using that much CPU when just sitting in the background. You may well be on the right track with your suggestions, however there's no setting in Key's preferences that would allow to dis-/enable any of the functionality you are referring to. There's only the autolock timeout setting and language.
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I have noticed that when I have the F-Secure Key loaded it loads the CPU quite heavily when it shouldn't be doing anything that would require much CPU power. When the Key window is open the CPU usage may even exceed 20%. Even when it's locked and closed it remains in the top 5 CPU users on my computer almost constantly with relatively high CPU utilization of approx. 3% on average, frequently exceeding 5% and only rarely goes to 0% where I would expect it to be when Key is locked and closed. I do not understand what is so CPU intensive that Key is doing in the background. My computer is a Acer Iconia W700 with Intel Core i5-3337U CPU @ 1.8 GHz and Windows 8.1 OS.
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