We have explained below in detail how charts work across platforms. full post here Charts on Dhan: What happens behind the scenes and how Charts work exactly?
For MCX Futures, if you are comfortable with data on TV, you can trade directly from TradingView by connect Dhan. More details here: TradingView Connect Broker - Connect Dhan to Tradingview.com
That aside, please note that MCX has recently moved to a new trading system. We have noticed bit inconsistent behaviour for same in market depth across all trading platforms. Keeping you posted.