PaperMC/nms-patches/TickListServer.patch

--- a/net/minecraft/server/TickListServer.java
+++ b/net/minecraft/server/TickListServer.java
@@ -37,11 +37,17 @@
         this.b();
         int i = this.nextTickList.size();
 
-        if (i != this.nextTickListHash.size()) {
+        if (false) { // CraftBukkit
             throw new IllegalStateException("TickNextTick list out of synch");
         } else {
             if (i > 65536) {
-                i = 65536;
+                // CraftBukkit start - If the server has too much to process over time, try to alleviate that
+                if (i > 20 * 65536) {
+                    i = i / 20;
+                } else {
+                    i = 65536;
+                }
+                // CraftBukkit end
             }
 
             this.h.getMethodProfiler().enter("selecting");