Do not switch from current algo if it is less than 5 percent profitable

Author: MoneroOcean

lib/pool.js

@@ -704,12 +704,14 @@ function Miner(id, login, pass, ipAddress, startingDiff, messageSender, protoVer
         }
         let best_algo = "";
         let best_algo_perf = this.algos_perf[""];
+        if (this.curr_algo === "") best_algo_perf *= 1.05;
         let miner = this;
         ALGOS.forEach(function(algo) {
             if (!(algo in activeBlockTemplate)) return;
             const port = activeBlockTemplate[algo].port;
             if (!(global.coinFuncs.algoTypeStr(port) in miner.algos) && !(global.coinFuncs.algoShortTypeStr(port) in miner.algos)) return;
-            const algoHashFactor = global.config.daemon["algoHashFactor" + algo];
+            let algoHashFactor = global.config.daemon["algoHashFactor" + algo];
+            if (this.curr_algo === algo) algoHashFactor *= 1.05;
             if (algo in miner.algos_perf && miner.algos_perf[algo] * algoHashFactor > best_algo_perf) {
                 debug(miner.logString + ": " + algo + ": " + miner.algos_perf[algo] * algoHashFactor);
                 best_algo = algo;