The first equity curve is from the provided script (entry from a tmf returning 2 as soon as price crosses 0.5*atr),
second is the same script without using a tmf, just with Entry = 0.5*atr.
Slippage=0 in both cases.

See the "inflation"?

The first approach should actually give worse results since price definitely has to cross the stop entry level (maybe by a lot) for an entry to trigger.