Async GameProfileCache saving

paper-server/patches/sources/net/minecraft/server/dedicated/DedicatedServer.java.patch

@@ -170,7 +170,7 @@
          DedicatedServer.LOGGER.info("Default game type: {}", dedicatedserverproperties.gamemode);
          InetAddress inetaddress = null;
  
-@@ -156,10 +246,23 @@
+@@ -156,21 +246,34 @@
              return false;
          }
  
@@ -195,7 +195,11 @@
              DedicatedServer.LOGGER.warn("To change this, set \"online-mode\" to \"true\" in the server.properties file.");
          }
  
-@@ -170,7 +273,7 @@
+         if (this.convertOldUsers()) {
+-            this.getProfileCache().save();
++            this.getProfileCache().save(false); // Paper - Perf: Async GameProfileCache saving
+         }
+ 
          if (!OldUsersConverter.serverReadyAfterUserconversion(this)) {
              return false;
          } else {