Understanding the common issues associated with 9.4.2 is critical for a smooth transition. The most notable is the VMware adapter issue, which was resolved by applying Patch 1. However, another known performance issue can arise when upgrading to on high-speed internet connections (such as 1 Gbps fiber). Some users experienced poor throughput after the upgrade, which was traced to Generic Receive Offload (GRO) settings. The solution involved modifying the GRO settings for internet and LAN interfaces from the web admin UI. A simple reboot could resolve it, but if not, the specific settings needed adjustment.