Extracting ATT and GPs messages with pymavlink is terrible slow

I try to extract the ATT and GPS messages out of a BIN file with the help of pymavlink.

The process is quite slooooow needing days for one file.

I use the DFReader function reading the BIN message by message and transfer the relevant messages to a data frame.

Is there a way to do this faster?

As far as I know, I do not think there is any other method of doing it faster.

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