Difference in TickReplay and Real-time backtesting

The backtesting is total rubbish in ninjatrader. Its beyond belief in 2025 they have no optimisation backtesting infrastructure…chatgpt wrote me a 10 line ninjascript that will record the live market and then he told me ways to access it in ninjatrader, i did not try but basically he said you can write another piece of code which reads your csv to invoke your strategy’s OnMarketDate…that or you can try purchasing the real tick data, I think.