Jarred Sumner (@jarredsumner) on X

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Jarred Sumner
@jarredsumner
Why is pasting into VSCode Terminal slow? Because it sleeps for 5ms every 50 characters.
$+ // Writing large amounts of data can be corrupted for some reason, after looking into this is + // appears to be a race condition around writing to the FD which may be based on how powerful the + // hardware is. The workaround for this is to space out when large amounts of data is being written + // to the terminal. See https://github.com/microsoft/vscode/issues/38137 + const WRITE_MAX_CHUNK_SIZE = 50; + const WRITE_ INTERVAL_MS = 5; + export class TerminalProcess extends Disposable implements + + + + + + // Queue the next write this. writeTimeout = setTimeout ( () →> { this. writeTimeout = undefined; this._ startWrite(); WRITE_INTERVAL_MS) ;$
3:15 AM · Dec 12, 20252.8MViews
Jarred Sumner
@jarredsumner
Dec 12, 2025
You can reproduce this if you paste a ~50 KB file into the terminal, it takes about 5s before it shows up.
Disallow writes to pty larger than 50 · microsoft/vscode@d92c1a8
From github.com
Jarred Sumner
@jarredsumner
Dec 12, 2025
@jaredpalmer
plz fix
tracy 💻 🦝
@tracy_codes
Dec 12, 2025
nah this is psycho behavior. who writes this code