René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Tab completion in large folders is very slow","articleBody":"Steps to reproduce\r\n------------------\r\n\r\nGet a folder with a decent number of files (65k will do)\r\nTry to do autocompletion on file name in this folder\r\n\r\n\r\nExpected behavior\r\n-----------------\r\n\r\nRespond time comparable with bash completion (about a second)\r\n\r\nActual behavior\r\n---------------\r\n\r\nNo response for 12 seconds (appears like a hang)\r\n\r\nFor comparisons, `ls | measure` in the same folder takes about 4 seconds (3 times faster), which hints that there is a room for improvements even without a big rewrite for the completion logic.\r\n\r\nEnvironment data\r\n----------------\r\n\r\n\u003c!-- provide the output of $PSVersionTable --\u003e\r\n\r\n```powershell\r\n\u003e $PSVersionTable\r\nName                           Value                                           \r\n----                           -----                                           \r\nPSVersion                      6.0.0-beta                                      \r\nPSEdition                      Core                                            \r\nGitCommitId                    v6.0.0-beta.5                                   \r\nOS                             Darwin 16.7.0 Darwin Kernel Version 16.7.0: T...\r\nPlatform                       Unix                                            \r\nPSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}                         \r\nPSRemotingProtocolVersion      2.3                                             \r\nSerializationVersion           1.1.0.1                                         \r\nWSManStackVersion              3.0   \r\n```\r\n","author":{"url":"https://github.com/vors","@type":"Person","name":"vors"},"datePublished":"2017-09-10T05:45:32.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":9},"url":"https://github.com/4797/PowerShell/issues/4797"}