From e4ca66ab319c02a9f5787bc1e4636418bcda6e38 Mon Sep 17 00:00:00 2001
From: Paul Chote <paul@chote.net>
Date: Wed, 19 Mar 2014 20:01:56 +1300
Subject: [PATCH] Fix start-game UI acceleration.

---
 OpenRA.Game/Game.cs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/OpenRA.Game/Game.cs b/OpenRA.Game/Game.cs
index 129d723d8e..e4aa5d05ed 100644
--- a/OpenRA.Game/Game.cs
+++ b/OpenRA.Game/Game.cs
@@ -170,7 +170,10 @@ namespace OpenRA
 			var uiTickDelta = tick - Ui.LastTickTime;
 			if (uiTickDelta >= Timestep)
 			{
-				Ui.LastTickTime += Timestep;
+				// Explained below for the world tick calculation
+				var integralTickTimestep = (uiTickDelta / Timestep) * Timestep;
+				Ui.LastTickTime += integralTickTimestep >= TimestepJankThreshold ? integralTickTimestep : Timestep;
+
 				Sync.CheckSyncUnchanged(world, Ui.Tick);
 				cursorFrame += 0.5f;
 			}