diff --git a/eth_portfolio/_cache.py b/eth_portfolio/_cache.py
index 01fe4edb..35b55d12 100644
--- a/eth_portfolio/_cache.py
+++ b/eth_portfolio/_cache.py
@@ -38,8 +38,10 @@ def get_cache_file_path(args, kwargs):
     makedirs(cache_path_for_fn, exist_ok=True)
 
     if inspect.iscoroutinefunction(fn):
-        read_executor = PruningThreadPoolExecutor(8, f"{_THREAD_NAME_PREFIX}-{fn.__qualname__}-read")
-        
+        read_executor = PruningThreadPoolExecutor(
+            8, f"{_THREAD_NAME_PREFIX}-{fn.__qualname__}-read"
+        )
+
         queue = PriorityQueue()
 
         @log_broken
diff --git a/eth_portfolio/_db/utils.py b/eth_portfolio/_db/utils.py
index 9efde3d2..c841b3c1 100644
--- a/eth_portfolio/_db/utils.py
+++ b/eth_portfolio/_db/utils.py
@@ -473,7 +473,7 @@ def token_transfers_known_at_startup() -> Dict[_TokenTransferPK, bytes]:
     tx_index: int
     log_index: int
     raw: bytes
-    
+
     transfers = {}
     for chainid, block, tx_index, log_index, raw in select(
         (t.block.chain.id, t.block.number, t.transaction_index, t.log_index, t.raw)
diff --git a/eth_portfolio/_ledgers/address.py b/eth_portfolio/_ledgers/address.py
index 4b5321bb..abf519da 100644
--- a/eth_portfolio/_ledgers/address.py
+++ b/eth_portfolio/_ledgers/address.py
@@ -408,7 +408,7 @@ class AddressTransactionsLedger(AddressLedgerBase[TransactionsList, Transaction]
     _list_type = TransactionsList
     __slots__ = ("cached_thru_nonce", "_queue", "_ready", "_num_workers", "_workers")
 
-    def __init__(self, portfolio_address: "PortfolioAddress", num_workers: int = 10_000):
+    def __init__(self, portfolio_address: "PortfolioAddress", num_workers: int = 1000):
         """
         Initializes the AddressTransactionsLedger instance.
 
@@ -592,6 +592,7 @@ async def get_transaction_status(txhash: str) -> Status:
 
 _trace_semaphores = defaultdict(lambda: a_sync.Semaphore(16, __name__ + ".trace_semaphore"))
 
+
 @cache_to_disk
 @eth_retry.auto_retry
 async def get_traces(filter_params: TraceFilterParams) -> List[FilterTrace]:
@@ -607,7 +608,9 @@ async def get_traces(filter_params: TraceFilterParams) -> List[FilterTrace]:
         The list of traces.
     """
     if chain.id == Network.Polygon:
-        logger.warning("polygon doesnt support trace_filter method, must develop alternate solution")
+        logger.warning(
+            "polygon doesnt support trace_filter method, must develop alternate solution"
+        )
         return []
     semaphore_key = tuple(
         sorted(tuple(filter_params.get(x, ("",)) for x in ("toAddress", "fromAddress")))
diff --git a/eth_portfolio/_loaders/token_transfer.py b/eth_portfolio/_loaders/token_transfer.py
index 68786af2..3ba81081 100644
--- a/eth_portfolio/_loaders/token_transfer.py
+++ b/eth_portfolio/_loaders/token_transfer.py
@@ -29,7 +29,7 @@
 logger = getLogger(__name__)
 
 token_transfer_semaphore = BlockSemaphore(
-    20_000, # Some arbitrary number
+    20_000,  # Some arbitrary number
     name="eth_portfolio.token_transfers",
 )
 """A semaphore that regulates the concurrent processing of token transfers by processing lower blocks first."""
@@ -104,7 +104,7 @@ async def load_token_transfer(
                 )
             else:
                 coro_results["transaction_index"] = await tx_index_coro
-                
+
         except Exception as e:
             logger.error(
                 f"%s %s for %s %s at block %s:",
@@ -208,7 +208,6 @@ async def get_transaction_index(hash: str) -> int:
         new = TypeError(e, receipt_bytes, decode(receipt_bytes))
         logger.exception(new)
         raise new from e
-        
 
 
 class HasTxIndex(Struct):
diff --git a/eth_portfolio/_loaders/transaction.py b/eth_portfolio/_loaders/transaction.py
index 1a608afc..9a09f20f 100644
--- a/eth_portfolio/_loaders/transaction.py
+++ b/eth_portfolio/_loaders/transaction.py
@@ -109,7 +109,9 @@ async def get_block_for_nonce(address: Address, nonce: Nonce) -> int:
         lowest_known_nonce_greater_than_query = None
 
         # it is impossible for n to == nonce
-        for less_than, ns in itertools.groupby(filter(lambda n: n != nonce, nonces[address]), lambda n: n < nonce):
+        for less_than, ns in itertools.groupby(
+            filter(lambda n: n != nonce, nonces[address]), lambda n: n < nonce
+        ):
             if less_than:
                 max_value = max(ns)
                 if (
@@ -172,8 +174,8 @@ async def get_block_for_nonce(address: Address, nonce: Nonce) -> int:
             lo += int((hi - lo) / 2) or 1
             if debug_logs_enabled:
                 logger._log(
-                    DEBUG, 
-                    "Nonce for %s at %s is %s, checking higher block %s", 
+                    DEBUG,
+                    "Nonce for %s at %s is %s, checking higher block %s",
                     (address, old_lo, _nonce, lo),
                 )
             continue
@@ -184,15 +186,15 @@ async def get_block_for_nonce(address: Address, nonce: Nonce) -> int:
             lo = int(lo / 2)
             if debug_logs_enabled:
                 logger._log(
-                    DEBUG, 
-                    "Nonce for %s at %s is %s, checking lower block %s", 
+                    DEBUG,
+                    "Nonce for %s at %s is %s, checking lower block %s",
                     (address, hi, _nonce, lo),
                 )
             continue
 
         if debug_logs_enabled:
             logger._log(DEBUG, "Found nonce %s for %s at block %s", (nonce, address, lo))
-            
+
         return lo
 
 
diff --git a/eth_portfolio/address.py b/eth_portfolio/address.py
index e12e6463..9987e68d 100644
--- a/eth_portfolio/address.py
+++ b/eth_portfolio/address.py
@@ -55,7 +55,7 @@ def __init__(
         address: Address,
         start_block: Block,
         load_prices: bool,
-        num_workers_transactions: int = 10_000,
+        num_workers_transactions: int = 1000,
         asynchronous: bool = False,
     ) -> None:  # type: ignore
         """
diff --git a/eth_portfolio/portfolio.py b/eth_portfolio/portfolio.py
index 624cf559..ed3a24ec 100644
--- a/eth_portfolio/portfolio.py
+++ b/eth_portfolio/portfolio.py
@@ -206,7 +206,7 @@ def __init__(
         start_block: int = 0,
         label: str = _DEFAULT_LABEL,
         load_prices: bool = True,
-        num_workers_transactions: int = 10_000,
+        num_workers_transactions: int = 1000,
         asynchronous: bool = False,
     ) -> None:
         """