Add support for higher refresh rates (120Hz)

lib/main.dart

@@ -9,6 +9,7 @@ import 'package:firebase_analytics/firebase_analytics.dart';
 import 'package:firebase_remote_config/firebase_remote_config.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:flutter_displaymode/flutter_displaymode.dart';
 import 'package:flutter_session_manager/flutter_session_manager.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 import 'package:restart_app/restart_app.dart';
@@ -111,10 +112,28 @@ class PageBaseState extends State<PageBase> {
 
   @override
   void initState() {
+    setOptimalDisplayMode();
     if (!_isCheckingForUpdate) _checkForUpdate(); // ik that it's not necessary
     super.initState();
   }
 
+  Future<void> setOptimalDisplayMode() async {
+    final List<DisplayMode> supported = await FlutterDisplayMode.supported;
+    final DisplayMode active = await FlutterDisplayMode.active;
+
+    final List<DisplayMode> sameResolution = supported
+        .where((DisplayMode m) =>
+            m.width == active.width && m.height == active.height)
+        .toList()
+      ..sort((DisplayMode a, DisplayMode b) =>
+          b.refreshRate.compareTo(a.refreshRate));
+
+    final DisplayMode mostOptimalMode =
+        sameResolution.isNotEmpty ? sameResolution.first : active;
+
+    await FlutterDisplayMode.setPreferredMode(mostOptimalMode);
+  }
+
   @override
   void setState(VoidCallback fn) {
     if (!mounted) return;

pubspec.lock

@@ -254,6 +254,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.4.2"
+  flutter_displaymode:
+    dependency: "direct main"
+    description:
+      name: flutter_displaymode
+      sha256: "42c5e9abd13d28ed74f701b60529d7f8416947e58256e6659c5550db719c57ef"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.6.0"
   flutter_driver:
     dependency: transitive
     description: flutter

pubspec.yaml

@@ -28,6 +28,7 @@ dependencies:
   flutter_linkify: ^6.0.0
   dynamic_color: ^1.4.0
   firebase_remote_config: ^4.2.6
+  flutter_displaymode: ^0.6.0
 dev_dependencies:
   integration_test:
     sdk: flutter