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[1.19+] Too many scrollbar marks slow down scrolling significantly #15955

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#16006
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[1.19+] Too many scrollbar marks slow down scrolling significantly#15955
#16006
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Area-PerformancePerformance-related issueArea-TerminalControlIssues pertaining to the terminal control (input, selection, keybindings, mouse interaction, etc.)In-PRThis issue has a related PRIssue-BugIt either shouldn't be doing this or needs an investigation.Needs-TriageIt's a new issue that the core contributor team needs to triage at the next triage meetingProduct-TerminalThe new Windows Terminal.
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Terminal v1.20
@DHowett

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@DHowett
DHowett
opened on Sep 11, 2023

I think this is what's happening. Fill a buffer and then search for a really short needle like e.

Scroll.

It will be really unusually slow.

It gets better if the needle is longer.

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    Area-PerformancePerformance-related issueArea-TerminalControlIssues pertaining to the terminal control (input, selection, keybindings, mouse interaction, etc.)In-PRThis issue has a related PRIssue-BugIt either shouldn't be doing this or needs an investigation.Needs-TriageIt's a new issue that the core contributor team needs to triage at the next triage meetingProduct-TerminalThe new Windows Terminal.

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