Can't use forex tester cause sessions indicator

When I use the sessions indicator and run several days of backtesting, it slows down and I can’t use the program. I think the issue is that all previous sessions are displayed on the chart. Could you add an input to show only the required number of past sessions, so the backtest can run properly? For example, showing only the current day’s and the previous day’s sessions, but not all sessions since the backtest started.