diff --git a/extensions/vscode-vue-language-features/package.json b/extensions/vscode-vue-language-features/package.json
index a951c39b3..b60358089 100644
--- a/extensions/vscode-vue-language-features/package.json
+++ b/extensions/vscode-vue-language-features/package.json
@@ -444,6 +444,11 @@
 					"type": "boolean",
 					"default": true,
 					"description": "Enabled update imports on file move."
+				},
+				"volar.diagnostics.delay": {
+					"type": "number",
+					"default": 200,
+					"description": "Delay time for diagnostics."
 				}
 			}
 		},
diff --git a/packages/vue-language-server/src/projects.ts b/packages/vue-language-server/src/projects.ts
index 28562b7a9..a045bfada 100644
--- a/packages/vue-language-server/src/projects.ts
+++ b/packages/vue-language-server/src/projects.ts
@@ -116,8 +116,6 @@ export function createProjects(
 		}
 	});
 
-	updateDiagnostics(undefined);
-
 	return {
 		workspaces,
 		getProject,
@@ -129,8 +127,6 @@ export function createProjects(
 
 		await updateDiagnostics(driveFileName ? shared.fsPathToUri(driveFileName) : undefined);
 
-		await shared.sleep(100);
-
 		if (req === semanticTokensReq) {
 			if (options.languageFeatures?.semanticTokens) {
 				connection.languages.semanticTokens.refresh();
@@ -150,8 +146,9 @@ export function createProjects(
 		}
 
 		const req = ++documentUpdatedReq;
+		const delay = await lsConfigs?.getConfiguration<number>('volar.diagnostics.delay');
 
-		await shared.sleep(100);
+		await shared.sleep(delay ?? 200);
 
 		if (req !== documentUpdatedReq)
 			return;
@@ -181,6 +178,8 @@ export function createProjects(
 
 		for (const doc of otherDocs) {
 
+			await shared.sleep(delay ?? 200);
+
 			if (req !== documentUpdatedReq)
 				return;