speed of retester is very slow

10:59:13 Starting strategies retesting...
10:59:13 Loading backtest data for Main test - EURUSD_M1 / H1
10:59:13 Data loaded from memory
10:59:13 Loading backtest data for Retest with higher precision - EURUSD_M1 / H1
10:59:13 Data loaded from memory
10:59:14 Loading backtest data for Retest on additional markets - GBPUSD_M1 / H1
10:59:14 Data loaded from memory
10:59:14 Loading backtest data for Retest on additional markets - USDCHF_M1 / H1
10:59:14 Data loaded from memory
10:59:15 All backtest data prepared
10:59:15 -----------------------------