diff --git a/packages/frontend/src/components/MkSignupDialog.form.vue b/packages/frontend/src/components/MkSignupDialog.form.vue
index 3560bebace..dd263ce642 100644
--- a/packages/frontend/src/components/MkSignupDialog.form.vue
+++ b/packages/frontend/src/components/MkSignupDialog.form.vue
@@ -14,7 +14,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<template #label>{{ i18n.ts.invitationCode }}</template>
 				<template #prefix><i class="ti ti-key"></i></template>
 			</MkInput>
-			<MkInput v-model="username" type="text" pattern="^[a-zA-Z0-9_]{1,20}$" :spellcheck="false" autocomplete="username" required data-cy-signup-username @update:modelValue="onChangeUsername">
+			<MkInput v-model="username" type="text" pattern="^[a-zA-Z0-9_]{1,20}$" :spellcheck="false" autocomplete="username" required data-cy-signup-username debounce @update:modelValue="onChangeUsername">
 				<template #label>{{ i18n.ts.username }} <div v-tooltip:dialog="i18n.ts.usernameInfo" class="_button _help"><i class="ti ti-help-circle"></i></div></template>
 				<template #prefix>@</template>
 				<template #suffix>@{{ host }}</template>
diff --git a/packages/frontend/src/components/MkUserSelectDialog.vue b/packages/frontend/src/components/MkUserSelectDialog.vue
index 63af652cbc..120f19cb7f 100644
--- a/packages/frontend/src/components/MkUserSelectDialog.vue
+++ b/packages/frontend/src/components/MkUserSelectDialog.vue
@@ -16,16 +16,16 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<template #header>{{ i18n.ts.selectUser }}</template>
 	<div>
 		<div :class="$style.form">
-			<MkInput v-if="computedLocalOnly" v-model="username" :autofocus="true" @update:modelValue="search">
+			<MkInput v-if="computedLocalOnly" v-model="username" :autofocus="true" debounce @update:modelValue="search">
 				<template #label>{{ i18n.ts.username }}</template>
 				<template #prefix>@</template>
 			</MkInput>
 			<FormSplit v-else :minWidth="170">
-				<MkInput v-model="username" :autofocus="true" @update:modelValue="search">
+				<MkInput v-model="username" :autofocus="true" debounce @update:modelValue="search">
 					<template #label>{{ i18n.ts.username }}</template>
 					<template #prefix>@</template>
 				</MkInput>
-				<MkInput v-model="host" :datalist="[hostname]" @update:modelValue="search">
+				<MkInput v-model="host" :datalist="[hostname]" debounce @update:modelValue="search">
 					<template #label>{{ i18n.ts.host }}</template>
 					<template #prefix>@</template>
 				</MkInput>
diff --git a/packages/frontend/src/pages/admin/users.vue b/packages/frontend/src/pages/admin/users.vue
index e26a2c827e..c693eed850 100644
--- a/packages/frontend/src/pages/admin/users.vue
+++ b/packages/frontend/src/pages/admin/users.vue
@@ -34,11 +34,11 @@ SPDX-License-Identifier: AGPL-3.0-only
 					</MkSelect>
 				</div>
 				<div :class="$style.inputs">
-					<MkInput v-model="searchUsername" style="flex: 1;" type="text" :spellcheck="false">
+					<MkInput v-model="searchUsername" style="flex: 1;" type="text" :spellcheck="false" debounce>
 						<template #prefix>@</template>
 						<template #label>{{ i18n.ts.username }}</template>
 					</MkInput>
-					<MkInput v-model="searchHost" style="flex: 1;" type="text" :spellcheck="false" :disabled="pagination.params.origin === 'local'">
+					<MkInput v-model="searchHost" style="flex: 1;" type="text" :spellcheck="false" :disabled="pagination.params.origin === 'local'" debounce>
 						<template #prefix>@</template>
 						<template #label>{{ i18n.ts.host }}</template>
 					</MkInput>
diff --git a/packages/frontend/src/pages/api-console.vue b/packages/frontend/src/pages/api-console.vue
index 30f12a8fb3..1e3bb0de6b 100644
--- a/packages/frontend/src/pages/api-console.vue
+++ b/packages/frontend/src/pages/api-console.vue
@@ -9,7 +9,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<MkSpacer :contentMax="700">
 		<div class="_gaps_m">
 			<div class="_gaps_m">
-				<MkInput v-model="endpoint" :datalist="endpoints" @update:modelValue="onEndpointChange()">
+				<MkInput v-model="endpoint" :datalist="endpoints" debounce @update:modelValue="onEndpointChange()">
 					<template #label>Endpoint</template>
 				</MkInput>
 				<MkTextarea v-model="body" code>