Are you using FXCM or Gain for forex data?
If so please review the setup video again as you missed an important step regarding making sure to select use Ninja Trader servers for historical data. If you don’t do this your charts will literally take minutes to load.
Yes you can probably set it up on your own without watching videos bu tthere are small steps that make a world of difference. 30 short minutes will save you hours, days weeks of frustration watch the course on setting up nt7 
