From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Thu, 26 Mar 2020 19:06:22 -0500
Subject: [PATCH] Configurable TPS Catchup


diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 0d57f093490e7db8d4d726111ba94e9edbceeda9..35bd4446652d291c77174c0aa366a9030d5b0bcc 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1196,7 +1196,13 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
                 this.tickServer(this::haveTime);
                 this.profiler.popPush("nextTickWait");
                 this.mayHaveDelayedTasks = true;
-                this.delayedTasksMaxNextTickTime = Math.max(Util.getMillis() + 50L, this.nextTickTime);
+                    // Purpur start - tps catchup
+                    if (org.purpurmc.purpur.PurpurConfig.tpsCatchup) {
+                        this.delayedTasksMaxNextTickTime = Math.max(Util.getMillis() + 50L, this.nextTickTime);
+                    } else {
+                        this.delayedTasksMaxNextTickTime = this.nextTickTime = curTime / 1000000L + 50L;
+                    }
+                    // Purpur end - tps catchup
                 this.waitUntilNextTick();
                 this.profiler.pop();
                 this.endMetricsRecordingTick();
diff --git a/src/main/java/org/purpurmc/purpur/PurpurConfig.java b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
index 918eee23167fb9b39bd19ba1a6d8776f83d56ea2..75570f6de691fb5dc95dd31d2255f3913a7100dd 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
@@ -241,4 +241,9 @@ public class PurpurConfig {
         loggerSuppressUnrecognizedRecipeErrors = getBoolean("settings.logger.suppress-unrecognized-recipe-errors", loggerSuppressUnrecognizedRecipeErrors);
         loggerSuppressSetBlockFarChunk = getBoolean("settings.logger.suppress-setblock-in-far-chunk-errors", loggerSuppressSetBlockFarChunk);
     }
+
+    public static boolean tpsCatchup = true;
+    private static void tpsCatchup() {
+        tpsCatchup = getBoolean("settings.tps-catchup", tpsCatchup);
+    }
 }