diff --git a/Data/Scripts/001_Technical/002_RubyUtilities.rb b/Data/Scripts/001_Technical/002_RubyUtilities.rb
index 3fd261494..1b796b039 100644
--- a/Data/Scripts/001_Technical/002_RubyUtilities.rb
+++ b/Data/Scripts/001_Technical/002_RubyUtilities.rb
@@ -144,14 +144,14 @@ class File
   # Copies the source file to the destination path.
   def self.copy(source, destination)
     data = ""
-    t = Time.now
+    t = System.uptime
     File.open(source, "rb") do |f|
       loop do
         r = f.read(4096)
         break if !r
-        if Time.now - t > 1
+        if System.uptime - t >= 5
+          t += 5
           Graphics.update
-          t = Time.now
         end
         data += r
       end
diff --git a/Data/Scripts/001_Technical/003_Intl_Messages.rb b/Data/Scripts/001_Technical/003_Intl_Messages.rb
index 1cdd00024..fecc79a69 100644
--- a/Data/Scripts/001_Technical/003_Intl_Messages.rb
+++ b/Data/Scripts/001_Technical/003_Intl_Messages.rb
@@ -7,12 +7,12 @@ module Translator
   def gather_script_and_event_texts
     Graphics.update
     begin
-      t = Time.now.to_i
+      t = System.uptime
       texts = []
       # Get script texts from Scripts.rxdata
       $RGSS_SCRIPTS.each do |script|
-        if Time.now.to_i - t >= 5
-          t = Time.now.to_i
+        if System.uptime - t >= 5
+          t += 5
           Graphics.update
         end
         scr = Zlib::Inflate.inflate(script[2])
@@ -22,8 +22,8 @@ module Translator
       # script texts from .rb files in Data/Scripts
       if $RGSS_SCRIPTS.length == 1
         Dir.all("Data/Scripts").each do |script_file|
-          if Time.now.to_i - t >= 5
-            t = Time.now.to_i
+          if System.uptime - t >= 5
+            t += 5
             Graphics.update
           end
           File.open(script_file, "rb") do |f|
@@ -36,8 +36,8 @@ module Translator
         plugin_scripts = load_data("Data/PluginScripts.rxdata")
         plugin_scripts.each do |plugin|
           plugin[2].each do |script|
-            if Time.now.to_i - t >= 5
-              t = Time.now.to_i
+            if System.uptime - t >= 5
+              t += 5
               Graphics.update
             end
             scr = Zlib::Inflate.inflate(script[1]).force_encoding(Encoding::UTF_8)
@@ -51,8 +51,8 @@ module Translator
       items = []
       choices = []
       commonevents.compact.each do |event|
-        if Time.now.to_i - t >= 5
-          t = Time.now.to_i
+        if System.uptime - t >= 5
+          t += 5
           Graphics.update
         end
         begin
@@ -99,8 +99,8 @@ module Translator
           end
         end
       end
-      if Time.now.to_i - t >= 5
-        t = Time.now.to_i
+      if System.uptime - t >= 5
+        t += 5
         Graphics.update
       end
       items |= []
@@ -110,8 +110,8 @@ module Translator
       # Find all text in map events and add them to messages
       mapinfos = pbLoadMapInfos
       mapinfos.each_key do |id|
-        if Time.now.to_i - t >= 5
-          t = Time.now.to_i
+        if System.uptime - t >= 5
+          t += 5
           Graphics.update
         end
         filename = sprintf("Data/Map%03d.rxdata", id)
@@ -120,8 +120,8 @@ module Translator
         items = []
         choices = []
         map.events.each_value do |event|
-          if Time.now.to_i - t >= 5
-            t = Time.now.to_i
+          if System.uptime - t >= 5
+            t += 5
             Graphics.update
           end
           begin
@@ -170,16 +170,16 @@ module Translator
             end
           end
         end
-        if Time.now.to_i - t >= 5
-          t = Time.now.to_i
+        if System.uptime - t >= 5
+          t += 5
           Graphics.update
         end
         items |= []
         choices |= []
         items.concat(choices)
         MessageTypes.setMapMessagesAsHash(id, items) if items.length > 0
-        if Time.now.to_i - t >= 5
-          t = Time.now.to_i
+        if System.uptime - t >= 5
+          t += 5
           Graphics.update
         end
       end
diff --git a/Data/Scripts/012_Overworld/001_Overworld.rb b/Data/Scripts/012_Overworld/001_Overworld.rb
index ba6fc6b6a..4c01b5088 100644
--- a/Data/Scripts/012_Overworld/001_Overworld.rb
+++ b/Data/Scripts/012_Overworld/001_Overworld.rb
@@ -4,7 +4,7 @@
 # Pokérus check
 EventHandlers.add(:on_frame_update, :pokerus_counter,
   proc {
-    next if !$player
+    next if !$player&.party.any? { |pkmn| pkmn.pokerusStage == 1 }
     last = $PokemonGlobal.pokerusTime
     next if !last
     now = pbGetTimeNow
@@ -48,7 +48,7 @@ EventHandlers.add(:on_frame_update, :low_battery_warning,
     next if $game_temp.warned_low_battery || !pbBatteryLow?
     next if $game_temp.in_menu || $game_temp.in_battle || $game_player.move_route_forcing ||
             $game_temp.message_window_showing || pbMapInterpreterRunning?
-    next if pbGetTimeNow.sec != 0
+    next if Time.now.sec != 0
     $game_temp.warned_low_battery = true
     pbMessage(_INTL("The game has detected that the battery is low. You should save soon to avoid losing your progress."))
   }
diff --git a/Data/Scripts/014_Pokemon/001_Pokemon.rb b/Data/Scripts/014_Pokemon/001_Pokemon.rb
index 5f8ce4cb6..86e5143a7 100644
--- a/Data/Scripts/014_Pokemon/001_Pokemon.rb
+++ b/Data/Scripts/014_Pokemon/001_Pokemon.rb
@@ -1207,7 +1207,7 @@ class Pokemon
     @obtain_text      = nil
     @obtain_level     = level
     @hatched_map      = 0
-    @timeReceived     = pbGetTimeNow.to_i
+    @timeReceived     = Time.now.to_i
     @timeEggHatched   = nil
     @fused            = nil
     @personalID       = rand(2**16) | (rand(2**16) << 16)
diff --git a/Data/Scripts/016_UI/001_Non-interactive UI/003_UI_EggHatching.rb b/Data/Scripts/016_UI/001_Non-interactive UI/003_UI_EggHatching.rb
index d78ecb7b1..16d8a4cf9 100644
--- a/Data/Scripts/016_UI/001_Non-interactive UI/003_UI_EggHatching.rb	
+++ b/Data/Scripts/016_UI/001_Non-interactive UI/003_UI_EggHatching.rb	
@@ -209,7 +209,7 @@ def pbHatch(pokemon)
   pokemon.name           = nil
   pokemon.owner          = Pokemon::Owner.new_from_trainer($player)
   pokemon.happiness      = 120
-  pokemon.timeEggHatched = pbGetTimeNow
+  pokemon.timeEggHatched = Time.now.to_i
   pokemon.obtain_method  = 1   # hatched from egg
   pokemon.hatched_map    = $game_map.map_id
   pokemon.record_first_moves
diff --git a/Data/Scripts/016_UI/012_UI_TrainerCard.rb b/Data/Scripts/016_UI/012_UI_TrainerCard.rb
index d787ab116..b8ca55a90 100644
--- a/Data/Scripts/016_UI/012_UI_TrainerCard.rb
+++ b/Data/Scripts/016_UI/012_UI_TrainerCard.rb
@@ -43,7 +43,7 @@ class PokemonTrainerCard_Scene
     hour = totalsec / 60 / 60
     min = totalsec / 60 % 60
     time = (hour > 0) ? _INTL("{1}h {2}m", hour, min) : _INTL("{1}m", min)
-    $PokemonGlobal.startTime = pbGetTimeNow if !$PokemonGlobal.startTime
+    $PokemonGlobal.startTime = Time.now if !$PokemonGlobal.startTime
     starttime = _INTL("{1} {2}, {3}",
                       pbGetAbbrevMonthName($PokemonGlobal.startTime.mon),
                       $PokemonGlobal.startTime.day,
diff --git a/Data/Scripts/016_UI/024_UI_MysteryGift.rb b/Data/Scripts/016_UI/024_UI_MysteryGift.rb
index e10255fb6..ccad05433 100644
--- a/Data/Scripts/016_UI/024_UI_MysteryGift.rb
+++ b/Data/Scripts/016_UI/024_UI_MysteryGift.rb
@@ -378,8 +378,7 @@ def pbReceiveMysteryGift(id)
   if gift[1] == 0   # Pokémon
     gift[2].personalID = rand(2**16) | (rand(2**16) << 16)
     gift[2].calc_stats
-    time = pbGetTimeNow
-    gift[2].timeReceived = time.getgm.to_i
+    gift[2].timeReceived = Time.now.to_i
     gift[2].obtain_method = 4   # Fateful encounter
     gift[2].record_first_moves
     gift[2].obtain_level = gift[2].level
diff --git a/Data/Scripts/018_Alternate battle modes/002_BugContest.rb b/Data/Scripts/018_Alternate battle modes/002_BugContest.rb
index 9144a23a9..8756870b3 100644
--- a/Data/Scripts/018_Alternate battle modes/002_BugContest.rb	
+++ b/Data/Scripts/018_Alternate battle modes/002_BugContest.rb	
@@ -27,8 +27,7 @@ class BugContestState
   # Returns whether the last contest ended less than 24 hours ago.
   def pbContestHeld?
     return false if !@lastContest
-    timenow = pbGetTimeNow
-    return timenow.to_i - @lastContest < 24 * 60 * 60   # 24 hours
+    return pbGetTimeNow.to_i - @lastContest < 24 * 60 * 60   # 24 hours
   end
 
   def expired?
@@ -222,8 +221,7 @@ class BugContestState
     @otherparty = []
     @contestMaps = []
     @reception = []
-    timenow = pbGetTimeNow
-    @lastContest = timenow.to_i
+    @lastContest = pbGetTimeNow.to_i
     $game_map.need_refresh = true
   end
 end
diff --git a/Data/Scripts/018_Alternate battle modes/003_Battle Frontier generator/001_ChallengeGenerator_Data.rb b/Data/Scripts/018_Alternate battle modes/003_Battle Frontier generator/001_ChallengeGenerator_Data.rb
index 46a4bbcd9..7fb8c0682 100644
--- a/Data/Scripts/018_Alternate battle modes/003_Battle Frontier generator/001_ChallengeGenerator_Data.rb	
+++ b/Data/Scripts/018_Alternate battle modes/003_Battle Frontier generator/001_ChallengeGenerator_Data.rb	
@@ -320,16 +320,16 @@ def pbWriteCup(id, rules)
   when 2   # Yes, use new
     return if !pbConfirmMessage(_INTL("This may take a long time. Are you sure?"))
     mw = pbCreateMessageWindow
-    t = Time.now
+    t = System.uptime
     pbGenerateChallenge(rules, id) do |message|
-      if Time.now - t >= 5
+      if System.uptime - t >= 5
+        t += 5
         Graphics.update
-        t = Time.now
       end
       if message
         pbMessageDisplay(mw, message, false)
+        t = System.uptime
         Graphics.update
-        t = Time.now
       end
     end
     pbDisposeMessageWindow(mw)
diff --git a/Data/Scripts/019_Utilities/001_Utilities.rb b/Data/Scripts/019_Utilities/001_Utilities.rb
index 4809ea972..6a18dc2d3 100644
--- a/Data/Scripts/019_Utilities/001_Utilities.rb
+++ b/Data/Scripts/019_Utilities/001_Utilities.rb
@@ -609,7 +609,7 @@ def pbChooseLanguage
 end
 
 def pbScreenCapture
-  t = pbGetTimeNow
+  t = Time.now
   filestart = t.strftime("[%Y-%m-%d] %H_%M_%S.%L")
   capturefile = RTP.getSaveFileName(sprintf("%s.png", filestart))
   Graphics.screenshot(capturefile)
diff --git a/Data/Scripts/020_Debug/001_Editor screens/004_EditorScreens_SpritePositioning.rb b/Data/Scripts/020_Debug/001_Editor screens/004_EditorScreens_SpritePositioning.rb
index 4673ffb94..8f93c325b 100644
--- a/Data/Scripts/020_Debug/001_Editor screens/004_EditorScreens_SpritePositioning.rb	
+++ b/Data/Scripts/020_Debug/001_Editor screens/004_EditorScreens_SpritePositioning.rb	
@@ -12,10 +12,10 @@ def findBottom(bitmap)
 end
 
 def pbAutoPositionAll
-  t = Time.now.to_i
+  t = System.uptime
   GameData::Species.each do |sp|
-    if Time.now.to_i - t >= 5
-      t = Time.now.to_i
+    if System.uptime - t >= 5
+      t += 5
       Graphics.update
     end
     metrics = GameData::SpeciesMetrics.get_species_form(sp.species, sp.form)
diff --git a/Data/Scripts/020_Debug/003_Debug menus/003_Debug_MenuExtraCode.rb b/Data/Scripts/020_Debug/003_Debug menus/003_Debug_MenuExtraCode.rb
index 1970e131b..15ef08d98 100644
--- a/Data/Scripts/020_Debug/003_Debug menus/003_Debug_MenuExtraCode.rb	
+++ b/Data/Scripts/020_Debug/003_Debug menus/003_Debug_MenuExtraCode.rb	
@@ -670,14 +670,14 @@ def pbDebugFixInvalidTiles
   num_error_maps = 0
   tilesets = $data_tilesets
   mapData = Compiler::MapData.new
-  t = Time.now.to_i
+  t = System.uptime
   Graphics.update
   total_maps = mapData.mapinfos.keys.length
   Console.echo_h1(_INTL("Checking {1} maps for invalid tiles", total_maps))
   mapData.mapinfos.keys.sort.each do |id|
-    if Time.now.to_i - t >= 5
+    if System.uptime - t >= 5
+      t += 5
       Graphics.update
-      t = Time.now.to_i
     end
     map_errors = 0
     map = mapData.getMap(id)
diff --git a/Data/Scripts/020_Debug/003_Debug menus/008_Debug_FilenameUpdater.rb b/Data/Scripts/020_Debug/003_Debug menus/008_Debug_FilenameUpdater.rb
index 92ab574aa..a15153303 100644
--- a/Data/Scripts/020_Debug/003_Debug menus/008_Debug_FilenameUpdater.rb	
+++ b/Data/Scripts/020_Debug/003_Debug menus/008_Debug_FilenameUpdater.rb	
@@ -36,7 +36,7 @@ module FilenameUpdater
   def update_berry_tree_event_charsets
     ret = []
     mapData = Compiler::MapData.new
-    t = Time.now.to_i
+    t = System.uptime
     Graphics.update
     Console.echo_li(_INTL("Checking {1} maps for used berry tree charsets...", mapData.mapinfos.keys.length))
     idx = 0
@@ -48,9 +48,9 @@ module FilenameUpdater
       next if !map || !mapData.mapinfos[id]
       changed = false
       map.events.each_key do |key|
-        if Time.now.to_i - t >= 5
+        if System.uptime - t >= 5
+          t += 5
           Graphics.update
-          t = Time.now.to_i
         end
         map.events[key].pages.each do |page|
           next if nil_or_empty?(page.graphic.character_name)
diff --git a/Data/Scripts/021_Compiler/004_Compiler_MapsAndEvents.rb b/Data/Scripts/021_Compiler/004_Compiler_MapsAndEvents.rb
index bf7f6a9be..282501333 100644
--- a/Data/Scripts/021_Compiler/004_Compiler_MapsAndEvents.rb
+++ b/Data/Scripts/021_Compiler/004_Compiler_MapsAndEvents.rb
@@ -1682,7 +1682,7 @@ module Compiler
   #=============================================================================
   def compile_trainer_events(_mustcompile)
     mapData = MapData.new
-    t = Time.now.to_i
+    t = System.uptime
     Graphics.update
     trainerChecker = TrainerChecker.new
     change_record = []
@@ -1696,9 +1696,9 @@ module Compiler
       map = mapData.getMap(id)
       next if !map || !mapData.mapinfos[id]
       map.events.each_key do |key|
-        if Time.now.to_i - t >= 5
+        if System.uptime - t >= 5
+          t += 5
           Graphics.update
-          t = Time.now.to_i
         end
         newevent = convert_to_trainer_event(map.events[key], trainerChecker)
         if newevent
@@ -1718,9 +1718,9 @@ module Compiler
           changed = true
         end
       end
-      if Time.now.to_i - t >= 5
+      if System.uptime - t >= 5
+        t += 5
         Graphics.update
-        t = Time.now.to_i
       end
       changed = true if check_counters(map, id, mapData)
       if changed