I think I have to download the historical data which tradeview has kindly provided in the workshop if I'm not mistaken because when I tried to run for 3 years 2015-2018 the result is similar so I suspect my platform only provides 1 year worth of data. Unless I'm doing something wrong.
Did you create a separate backtest MT4 like they've asked in the workshop? I've skipped that part so wondering if that's the issue.