How many trades for single optimized parameter does the algo place?
The rule of thumb is 20 trade for each parameter in single wfocycle
Establish in advance a set a parameters or indicator that will determine the "Stop the TS condition" and be ready to stick with it.
i.e PF of the last 30 trades < 85% of PF of the TS in the backtest and number of consecutive loss > maximum of consecutive loss of the TS.
Reinvesting will complicate this topic a bit