Anyone noticed a severe delay on opening start menu after latest cumulative update? (10586.218) Was annoying the hell out of me all day, boot seems a little sluggish also, but can live with that. I have Bloatana and Search removed via reg tweaks and never had a problem with that, apart from Event Viewer filled with errors saying so, but after today's update, something has changed. Regardless. It can be fixed by renaming the file below, and hey presto!, no delay after clicking start now Seems this file is now running every time start is clicked, hence the lag, and only after this update. C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe <------ rename to whatever.