# Speedup Settings for 10 GbE

## Introduction

<div id="bkmrk-macos-is-notorious-f">macOS is notorious for asymmetric SMB performance to Unraid/Samba, especially reads, without client and server tuning. Typical culprits:</div><div id="bkmrk-smb-signing-and-encr">- SMB signing and encryption enabled by default on macOS, adding CPU and latency overhead to reads.
- Apple SMB extensions (AAPL / fruit) and Finder metadata lookups, which can severely hurt directory reads and some sequential patterns.
- macOS SMB client defaults in /etc/nsmb.conf not optimized for high‑bandwidth, wired 10 GbE connections.

</div>## Quick fix

On macOS 15.6.1 (run with sudo ), create or edit /etc/nsmb.conf :

```ini
[default]
signing_required=no
mc_on=yes
mc_prefer_wired=yes
protocol_vers_map=6
smb_neg=smb3_only
dir_cache_off=yes
```