Taking way to long to read mf classic 4K

every time i try to read this tag is gets to a point where it doesn’t move any further in the progress bars

The reading process takes a long time to read data off the card since Flipper tries every key in its database - with the limited CPU power Flipper has, this takes a while. If it does not read all keys or sectors, you are missing more keys in the database. You may want to try obtaining the keys from an online database and add them to your Flipper’s database. This database is mostly complete but there are some duplicates with the built in database that gets added to the Flipper during a firmware update.

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