For my use case, autocomplete of any kind is useless, so I turn it all off. When "in the zone" anything that distracts from getting ideas out of my head as quickly as possible is annoying. Also, zen-mode, FTW.

    "editor.acceptSuggestionOnEnter": "off",
    "editor.quickSuggestions": {
        "comments": false,
        "other": false,
        "strings": false
    },
    "editor.wordBasedSuggestions": false,
    "extensions.ignoreRecommendations": true,