This is a dirty fix. Dollar value (syminfo.pointvalue) is wrong in Tradingview for the below listed futures, where the price is in quarters of cents. For example ZC (Corn) says syminfo.pointvalue = 5000 (syminfo.mintick = 0.13), which gives you (with ATR = 6) volatility of $30,000 (6 * 5000) instead of the correct $300. For all other futures I used the default syminfo.pointvalue.
Feel free to correct me, if I am wrong regarding the syminfo.pointvalue error.