MT5 and Python: Can we simply update ticks in a DataFrame without having billions of wasted(?) cycles on MT5 in a couple of minutes?

[FlaxF]

Please, watch the little GIF.

I just want to update the dataframe column 'last' price and do some calculations after the update loop. Why so many cycles? sounds like a waste of resources.

Number of stocks and options: 4900

I'm using MT5, Python, Pandas.

Loop the names of the stocks / options and update their last prices:

df['last'] = 0.0
len(df)
for n in df.name.index:
    df['last'].values[n] = getTick(df.name[n]).last

getTick is using mt5.symbol_info_tick('stockname')

Already tried other panda modes to update the values, like .at,.apply etc.

How to optimize the MT5 > Python > Pandas ticks stream? The update is slow (the first loop takes 5 minutes or more). 

So many cycles and still slow to update.

Please, any advice?

If you have an example of code to show how you do it would be great.