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Contributor
Contributor

Fusion Internet Speed is Super Slow compared to Host

Hello

I am new to the forums but a long time fusion user. Until recently internet speed was not an issue but I am seeing a huge loss of internet performance.

- Running an Early 2015 MBP with MAC OS Catalina with Fusion 11.5.6

- VMware Tools 11.1.0 Build 16036546

- Windows 10 all updated

The host machine (MAC OS) side gets upward of 643MB download speeds using the speed test however when I do a similar test on the Windows I never exceed 55MB. I have cycled through using the various network connections NAT, Bridge, Autodetect

I even went into  gpedit.msc >> Administrative Templates >> Network >> QoS Packet Scheduler >> Limit Reserve Bandwidth set to Enable and 100 and switched to 0.

I have endlessly tired various things.

Any help will be greatly appreciated in solving this. Happy to share any additional information if you give me the instructions to generate the relevant logs.

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User Moderator
User Moderator

Hi,

Changing to UEFI is something you can do, I'm not really expecting it to make much of a difference though.

As before... make sure you have good backup.

Then for changing the disk from MBR to GPT follow these steps:

https://www.windowscentral.com/how-convert-mbr-disk-gpt-move-bios-uefi-windows-10

After that you have to change the VM configuration to use UEFI instead of BIOS and you can do that via the menu.

With your VM shut down, go to settings, advanced, Firmware type:

Change it from Legacy BIOS to UEFI

Do not make other changes in regards to UEFI and VBS in that screen.

--

Wil

| Author of Vimalin. The virtual machine Backup app for VMware Fusion, VMware Workstation and Player |
| More info at vimalin.com | Twitter @wilva
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User Moderator
User Moderator

Oh.. one other thing that also might impact your performance. I noticed you had AutoProtect snapshots enabled and as such your VM always has snapshots open.

This degrades your disk read/write performance.

Depending on how you tested your internet speed -- if it is download to disk -- then your performance test might actually have been testing your disk write speed instead of the network speed.

--

Wil

| Author of Vimalin. The virtual machine Backup app for VMware Fusion, VMware Workstation and Player |
| More info at vimalin.com | Twitter @wilva
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Wila I made all these changes, not much of an improvement that I notice.

The part I don't understand is why in Ubuntu the internet is super fast and under Windows is super shitty. Is this just due to the bloat windows has? What if I did a fresh install of windows 10?

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User Moderator
User Moderator

Hi,

Let's get back to basics.

When you say:

The part I don't understand is why in Ubuntu the internet is super fast and under Windows is super shitty.

How are you testing your internet speed?

--

Wil

| Author of Vimalin. The virtual machine Backup app for VMware Fusion, VMware Workstation and Player |
| More info at vimalin.com | Twitter @wilva
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Im not doing a sophisticated test by any sorts. Im just running a speed test Ookla or Google.

I have tried using the new Edge Browser and Chrome.  I did a similar test in Ubuntu but it had the FireFox browser installed which I used. wila

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User Moderator
User Moderator

Hi,


The browser used should not make a big difference for this test. If anything I would have expected Chrome and Edge to be slightly faster than Firefox.

The tests you ran are fine.

Ookla and Google speed tests should indeed measure bandwidth and not be ending up misrepresenting bandwidth due to other factors such as disk writing speed or a bad DNS server or a bad route or...

That also eliminates a few other uncertainties and I'm not sure why you would get better bandwidth in Linux than in Windows 10.

I'm having doubts that a re-install from scratch is going to fix it or that you can fix it in another way.

Perhaps someone else has another idea.

--

Wil

| Author of Vimalin. The virtual machine Backup app for VMware Fusion, VMware Workstation and Player |
| More info at vimalin.com | Twitter @wilva
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Thanks for your helo wila​ I actually noticed some improvements opening Excel and Word with the changes.

Mikero​ any ideas for this issue other than what we tried?

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