diff --git a/README.md b/README.md
index 41730c0..0ac5ad2 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-<h1 align="center">Welcome to duino-pools 👋</h1>
+<h1 align="center">Welcome to duino-coin-pools 👋</h1>
 <p align ="center">
     <img src="https://img.shields.io/badge/node-%3E%3D16.0.0-blue.svg?logo=node.js&logoColor=white" />
     <img alt="Maintenance" src="https://img.shields.io/badge/maintained-yes-green.svg" />
diff --git a/package.json b/package.json
index 6b525b5..6fcc0cd 100644
--- a/package.json
+++ b/package.json
@@ -14,6 +14,7 @@
     "node-os-utils": "^1.3.5",
     "xxhashjs": "^0.2.2",
     "chalk": "4.1.2",
+    "sync-request": "^6.1.0",
     "form-data": "4.0.0"
   }
 }
diff --git a/src/mining.js b/src/mining.js
index b430069..a7bf0fa 100755
--- a/src/mining.js
+++ b/src/mining.js
@@ -1,7 +1,7 @@
 /* Duino-Coin Mining handler
 For documention about these functions see
 https://github.com/revoxhere/duino-coin/blob/useful-tools
-2019-2022 Duino-Coin community */
+2019-2023 Duino-Coin community */
 
 const crypto = require("crypto");
 const request = require('sync-request');
@@ -24,13 +24,14 @@ globalBlocks = [];
 let workers = {};
 let usrWorkers = {};
 let minersStats = {};
+let cachedItems = {};
 let balancesToUpdate = {};
 let globalShares = {
     increase: 0,
     total: 0,
 };
 if (!max_shares_per_minute) {
-    let max_shares_per_minute = 70;
+    let max_shares_per_minute = 80;
 }
 
 const getDiff = (poolRewards, textDiff) => {
@@ -47,8 +48,13 @@ const checkWorkers = (ipWorkers, usrWorkers, serverMiners, username) => {
 
     if (Math.max(ipWorkers, usrWorkers, serverMiners) > maxWorkers) {
         /* Check if user has worker limit upgrades */
-        res = request('GET', `https://server.duinocoin.com/v2/users/${username}`)
-        userItems = JSON.parse(res.getBody('utf8')).result.items;
+        if (!cachedItems.hasOwnProperty(username) && getRand(50) != 10) {
+            res = request('GET', `https://server.duinocoin.com/v2/users/${username}`)
+            userItems = JSON.parse(res.getBody('utf8')).result.items;
+            cachedItems[username] = userItems;
+        } else {
+            userItems = cachedItems[username];
+        }
 
         if (userItems.includes(10) && userItems.includes(11)) {
             if (Math.max(ipWorkers, usrWorkers, serverMiners) > 125) {
@@ -150,8 +156,6 @@ const miningHandler = async (conn, data, mainListener, usingAVR) => {
             data = data.split(",");
             conn.ping = (new Date() - feedback_sent) / 1000;
 
-            if (data[1] != username) conn.reject_shares = "Username changed";
-
             if (conn.overrideDifficulty)
                 reqDifficulty = conn.overrideDifficulty;
             else if (usingAVR) reqDifficulty = "AVR";
@@ -247,10 +251,9 @@ const miningHandler = async (conn, data, mainListener, usingAVR) => {
 
         conn.lastminshares++;
 
+        let miner_res = parseInt(answer[0]);
         if (usingAVR) {
             miner_res = parseInt(answer[0], 2);
-        } else {
-            miner_res = parseInt(answer[0]);
         }
 
         /* try {