Which broker is best for BackTesting (Modelling Quality)

Beginner Questions
1

Hello,

  1. How to improve Back-testing performance such as Modelling Quality.
  2. Which broker have clean chart data without gaps and errors for backtesting?

I am using Hotforex for backtesting and my modelling quality is less than 25%.

2

I assume you are referring to backtesting an algorithm?

If so sorry my personal knowledge is very limited but because I have been interested in algo building and testing I found a YouTube channel called Darwinex to be very informative. They may be able to help.

3

If you’re talking about MT4, then there are none. The quality is bad everywhere, especially on M1 charts.
MT5 is a different story, though

4

So where do i test my EA?

5

For free - only in MT5. A lot of brokers offer their tick data which is available for download in MT5.
If you want to get a high modelling quality of >99% in MT4, the only way to get it is through third-party commercial software, for example, Tick Data Suite.