diff --git a/apps/arweave/src/ar_block_pre_validator.erl b/apps/arweave/src/ar_block_pre_validator.erl
index 455bbc5d1..67bc37227 100644
--- a/apps/arweave/src/ar_block_pre_validator.erl
+++ b/apps/arweave/src/ar_block_pre_validator.erl
@@ -458,6 +458,13 @@ get_last_step_prev_output(B) ->
 	end.
 
 validate_poa_against_cached_poa(B, CacheB) ->
+	case CacheB#block.poa_cache of
+		{_, _} ->
+			ok;
+		_ ->
+			ID = binary_to_list(ar_util:encode(crypto:strong_rand_bytes(2))),
+			file:write_file("/opt/arweave/bad-block-" ++ ID, term_to_binary(B))
+	end,
 	#block{ poa_cache = {ArgCache, ChunkID}, poa2_cache = Cache2 } = CacheB,
 	Args = erlang:append_element(erlang:insert_element(5, ArgCache, B#block.poa), ChunkID),
 	case ar_poa:validate(Args) of
diff --git a/apps/arweave/src/ar_data_sync_worker_master.erl b/apps/arweave/src/ar_data_sync_worker_master.erl
index 30d003c3b..387be3c99 100644
--- a/apps/arweave/src/ar_data_sync_worker_master.erl
+++ b/apps/arweave/src/ar_data_sync_worker_master.erl
@@ -240,7 +240,7 @@ process_peer_queue(PeerTasks, State) ->
 %% @doc the maximum number of tasks we can have in process - including stasks queued here as well
 %% as those scheduled on ar_data_sync_workers.
 max_tasks(WorkerCount) ->
-	WorkerCount * 50.
+	WorkerCount * 5.
 
 %% @doc The maximum number of tasks we can have queued for a given peer.
 max_peer_queue(_Peformance, 0, _WorkerCount) ->
diff --git a/apps/arweave/src/ar_http_iface_middleware.erl b/apps/arweave/src/ar_http_iface_middleware.erl
index f5e740e30..13db49b0e 100644
--- a/apps/arweave/src/ar_http_iface_middleware.erl
+++ b/apps/arweave/src/ar_http_iface_middleware.erl
@@ -2432,6 +2432,7 @@ post_block(check_transactions_are_present, {BShadow, Peer}, Req, ReceiveTimestam
 			post_block(enqueue_block, {BShadow, Peer}, Req, ReceiveTimestamp)
 	end;
 post_block(enqueue_block, {B, Peer}, Req, ReceiveTimestamp) ->
+	try
 	B2 =
 		case B#block.height >= ar_fork:height_2_6() of
 			true ->
@@ -2459,6 +2460,12 @@ post_block(enqueue_block, {B, Peer}, Req, ReceiveTimestamp) ->
 				byte_size(term_to_binary(B)));
 		_ ->
 			ok
+	end
+	catch
+		error:Reason:Stacktrace ->
+			ID = binary_to_list(ar_util:encode(crypto:strong_rand_bytes(16))),
+			file:write_file("/opt/arweave/stacktrace" ++ ID, term_to_binary(Stacktrace)),
+			?LOG_ERROR("CAUGHT ~p ~p", [Reason, Stacktrace])
 	end,
 	{200, #{}, <<"OK">>, Req}.