diff --git a/optuna_dashboard/ts/components/Debounce.tsx b/optuna_dashboard/ts/components/Debounce.tsx
index 31e34739..c8ee1751 100644
--- a/optuna_dashboard/ts/components/Debounce.tsx
+++ b/optuna_dashboard/ts/components/Debounce.tsx
@@ -1,6 +1,7 @@
 import React, { FC, useEffect } from "react"
 import { TextField, TextFieldProps } from "@mui/material"
 
+// TODO(c-bata): Remove this and use `useDeferredValue` instead.
 export const DebouncedInputTextField: FC<{
   onChange: (s: string, valid: boolean) => void
   delay: number
diff --git a/optuna_dashboard/ts/components/StudyList.tsx b/optuna_dashboard/ts/components/StudyList.tsx
index 6c662519..49d5c191 100644
--- a/optuna_dashboard/ts/components/StudyList.tsx
+++ b/optuna_dashboard/ts/components/StudyList.tsx
@@ -1,4 +1,10 @@
-import React, { FC, useEffect, useState } from "react"
+import React, {
+  FC,
+  useEffect,
+  useState,
+  useDeferredValue,
+  useMemo,
+} from "react"
 import { useNavigate } from "react-router-dom"
 import { useRecoilValue } from "recoil"
 import { Link } from "react-router-dom"
@@ -26,7 +32,6 @@ import CompareIcon from "@mui/icons-material/Compare"
 import DriveFileRenameOutlineIcon from "@mui/icons-material/DriveFileRenameOutline"
 
 import { actionCreator } from "../action"
-import { DebouncedInputTextField } from "./Debounce"
 import { studySummariesLoadingState, studySummariesState } from "../state"
 import { styled } from "@mui/system"
 import { AppDrawer } from "./AppDrawer"
@@ -41,7 +46,8 @@ export const StudyList: FC<{
   const theme = useTheme()
   const action = actionCreator()
 
-  const [studyFilterText, setStudyFilterText] = React.useState<string>("")
+  const [_studyFilterText, setStudyFilterText] = React.useState<string>("")
+  const studyFilterText = useDeferredValue(_studyFilterText)
   const studyFilter = (row: StudySummary) => {
     const keywords = studyFilterText.split(" ")
     return !keywords.every((k) => {
@@ -64,12 +70,14 @@ export const StudyList: FC<{
   const query = useQuery()
   const initialSortBy = query.get("studies_order_by") === "asc" ? "asc" : "desc"
   const [sortBy, setSortBy] = useState<"asc" | "desc">(initialSortBy)
+  const filteredStudies = useMemo(() => {
+    let filteredStudies: StudySummary[] = studies.filter((s) => !studyFilter(s))
+    if (sortBy === "desc") {
+      filteredStudies = filteredStudies.reverse()
+    }
+    return filteredStudies
+  }, [studyFilterText, studies, sortBy])
 
-  let filteredStudies = studies.filter((s) => !studyFilter(s))
-
-  if (sortBy === "desc") {
-    filteredStudies = filteredStudies.reverse()
-  }
   useEffect(() => {
     action.updateStudySummaries()
   }, [])
@@ -201,26 +209,23 @@ export const StudyList: FC<{
           <Card sx={{ margin: theme.spacing(2) }}>
             <CardContent>
               <Box sx={{ display: "flex" }}>
-                <DebouncedInputTextField
-                  onChange={(s) => {
-                    setStudyFilterText(s)
+                <TextField
+                  onChange={(e) => {
+                    setStudyFilterText(e.target.value)
                   }}
-                  delay={500}
-                  textFieldProps={{
-                    fullWidth: true,
-                    id: "search-study",
-                    variant: "outlined",
-                    placeholder: "Search study",
-                    sx: { maxWidth: 500 },
-                    InputProps: {
-                      startAdornment: (
-                        <InputAdornment position="start">
-                          <SvgIcon fontSize="small" color="action">
-                            <Search />
-                          </SvgIcon>
-                        </InputAdornment>
-                      ),
-                    },
+                  id="search-study"
+                  variant="outlined"
+                  placeholder="Search study"
+                  fullWidth
+                  sx={{ maxWidth: 500 }}
+                  InputProps={{
+                    startAdornment: (
+                      <InputAdornment position="start">
+                        <SvgIcon fontSize="small" color="action">
+                          <Search />
+                        </SvgIcon>
+                      </InputAdornment>
+                    ),
                   }}
                 />
                 {sortBySelect}
diff --git a/standalone_app/src/components/Debounce.tsx b/standalone_app/src/components/Debounce.tsx
deleted file mode 100644
index 31e34739..00000000
--- a/standalone_app/src/components/Debounce.tsx
+++ /dev/null
@@ -1,28 +0,0 @@
-import React, { FC, useEffect } from "react"
-import { TextField, TextFieldProps } from "@mui/material"
-
-export const DebouncedInputTextField: FC<{
-  onChange: (s: string, valid: boolean) => void
-  delay: number
-  textFieldProps: TextFieldProps
-}> = ({ onChange, delay, textFieldProps }) => {
-  const [text, setText] = React.useState<string>("")
-  const [valid, setValidity] = React.useState<boolean>(true)
-  useEffect(() => {
-    const timer = setTimeout(() => {
-      onChange(text, valid)
-    }, delay)
-    return () => {
-      clearTimeout(timer)
-    }
-  }, [text, delay])
-  return (
-    <TextField
-      onChange={(e) => {
-        setText(e.target.value)
-        setValidity(e.target.validity.valid)
-      }}
-      {...textFieldProps}
-    />
-  )
-}
diff --git a/standalone_app/src/components/StudyList.tsx b/standalone_app/src/components/StudyList.tsx
index 4fdd4537..dcad8f27 100644
--- a/standalone_app/src/components/StudyList.tsx
+++ b/standalone_app/src/components/StudyList.tsx
@@ -1,4 +1,4 @@
-import React, { FC, useState } from "react"
+import React, { FC, useState, useMemo, useDeferredValue } from "react"
 import {
   AppBar,
   Typography,
@@ -22,7 +22,6 @@ import Brightness7Icon from "@mui/icons-material/Brightness7"
 import { useRecoilValue } from "recoil"
 import { studiesState } from "../state"
 import { Link } from "react-router-dom"
-import { DebouncedInputTextField } from "./Debounce"
 import { Search } from "@mui/icons-material"
 import { StorageLoader } from "./StorageLoader"
 
@@ -32,8 +31,9 @@ export const StudyList: FC<{
   const theme = useTheme()
   const studies = useRecoilValue<Study[]>(studiesState)
 
-  const [studyFilterText, setStudyFilterText] = useState<string>("")
+  const [_studyFilterText, setStudyFilterText] = useState<string>("")
   const [sortBy, setSortBy] = useState<"id-asc" | "id-desc">("id-asc")
+  const studyFilterText = useDeferredValue(_studyFilterText)
   const studyFilter = (row: Study): boolean => {
     const keywords = studyFilterText.split(" ")
     return !keywords.every((k) => {
@@ -43,10 +43,13 @@ export const StudyList: FC<{
       return row.study_name.indexOf(k) >= 0
     })
   }
-  let filteredStudies: Study[] = studies.filter((s) => !studyFilter(s))
-  if (sortBy === "id-desc") {
-    filteredStudies = filteredStudies.reverse()
-  }
+  const filteredStudies = useMemo(() => {
+    let filteredStudies: Study[] = studies.filter((s) => !studyFilter(s))
+    if (sortBy === "id-desc") {
+      filteredStudies = filteredStudies.reverse()
+    }
+    return filteredStudies
+  }, [studyFilterText, studies, sortBy])
 
   const Select = styled(TextField)(({ theme }) => ({
     "& .MuiInputBase-input": {
@@ -131,26 +134,23 @@ export const StudyList: FC<{
         <Card sx={{ margin: theme.spacing(2) }}>
           <CardContent>
             <Box sx={{ display: "flex" }}>
-              <DebouncedInputTextField
-                onChange={(s) => {
-                  setStudyFilterText(s)
+              <TextField
+                onChange={(e) => {
+                  setStudyFilterText(e.target.value)
                 }}
-                delay={500}
-                textFieldProps={{
-                  fullWidth: true,
-                  id: "search-study",
-                  variant: "outlined",
-                  placeholder: "Search study",
-                  sx: { maxWidth: 500 },
-                  InputProps: {
-                    startAdornment: (
-                      <InputAdornment position="start">
-                        <SvgIcon fontSize="small" color="action">
-                          <Search />
-                        </SvgIcon>
-                      </InputAdornment>
-                    ),
-                  },
+                id="search-study"
+                variant="outlined"
+                placeholder="Search study"
+                fullWidth
+                sx={{ maxWidth: 500 }}
+                InputProps={{
+                  startAdornment: (
+                    <InputAdornment position="start">
+                      <SvgIcon fontSize="small" color="action">
+                        <Search />
+                      </SvgIcon>
+                    </InputAdornment>
+                  ),
                 }}
               />
               {sortBySelect}