Issue:
Civil 3D: When opening a file with a large Image attached or using External Reference to attach an image. Civil 3D Freezes or Crashes.
Causes:
This is a result of the speed it takes to open the file.
Receive Segment Coalescing (RSC) in the vSwitch feature in Windows Server 2019. This new feature helps reduce host CPU utilization and increases throughput for virtual workloads by coalescing multiple TCP segments into fewer, but larger segments. Processing fewer, large segments (coalesced) is more efficient than processing numerous, small segments.
Solution:
Hyper-V Port adapters
On the Server Configuration where the files are stored, ensure the following options are checked on the Hyper-V Port adapters:
- Client for Microsoft Adapters
- File and Printer Sharing for Microsoft Networks
- Internet Protocol Version 4 (TCP/IPv4)
Figure 1
Receive Segment Coalescing (RSC)
Disable RSC in vSwitch using the command below in PowerShell on a host running as a virtual machine.
Set-VMSwitch -Name vSwitchName -EnableSoftwareRsc $false
See
https://learn.microsoft.com/en-us/windows-server/networking/technologies/hpn/rsc-in-the-vswitch
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