How to make FE work faster?
Most time before displaying price bars/candles the program spends on loading historical data. There may be thousands bars in the history.
By default, the program loads all bars available but you can limit their number that speeds up execution dramatically.

Loading 5 year H1 history, 1.279 seconds

Changing settings to limit bars number (check Limit bars loaded box and reduce Bars loaded number to 100-300)

Loading 1 year H1 history, 0.374 seconds