Laptudinal Posted July 15, 2021 Share Posted July 15, 2021 Out of nowhere my system has become unusuable due to extremely laggy mouse and keyboard. Whether onboard mouse/keyboard or USB, it's all the same. I didn't install any update or do anything else. It just one day went laggy. Running OpenCore on macOS 11.4. I've used the OC files shared here from other Latitude 3400 users. Everything worked great until recently. Any thoughts on what might be the cause? Quote Link to comment Share on other sites More sharing options...
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