How do I fetch the entire transaction-history of an address in the fastest way possible?

Question

I just built myself a hardware full node at home. It's running geth and I'm accessing the on-chain data through the JSON RPC API. I'm using web3.py because of convenience.

I want to have a "ledger" basically of all the transactions that I sent or received to a specific address. This post already detailed how to do this. The only issue is, that my account is kinda old. The script I'm running is able to process aprox 1.000 blocks within 3 minutes. If we extrapolate a little bit here, 1.000.000 blocks would roughly take 2 days. 10.000.000 blocks would roughly take 20 days. Blockheight 6.000.000 as an example is dated Jul-20-2018. So even if my script ran 20 days non-stop, I still wouldn't have found all the transactions associated with the account. Is there anything I can do to speed this up? I'm kinda dumbfounded because I thought there was a more efficient way to do this.

Edit1: I should mention that I obviously know about etherscan etc., but the idea of spinning up my own node was to have my own server to serve requests at any point. I want to play around locally, without any 3rd party provider. I hope this works somehow...

Just for completion, here's the function I'm calling:

def getAllTransactionsOfAddress(address):
    transactionCount = w3.eth.getTransactionCount(address,currentBlock)
    addressBalance = w3.eth.getBalance(address,currentBlock)
    i = currentBlock
    while i >= 0 and (transactionCount > 0 or addressBalance > 0):
        try:
            block = w3.eth.get_block(i, True)
            if block and block.transactions:
                for transaction in block.transactions:
                    if address == transaction['from']:
                        if transaction['from'] != transaction.to:
                            addressBalance = addressBalance + transaction.value
                        print(transaction.blockHash,transaction.hash,transaction['from'],transaction.to)
                        transactionCount -= transactionCount
                    if address == transaction.to:
                        if transaction['from'] != transaction.to:
                            addressBalance = addressBalance - transaction.value
                        print(transaction.blockHash,transaction.hash,transaction['from'],transaction.to)
        except:
            print("Error in block"+i)
        i-=1
        if i % 1000 == 0:
            print(str(i) + " " + str(datetime.now().strftime('%Y-%m-%d %H:%M:%S')))

Thanks and Cheers!