File transfer speed still slow as ever

We recently purchased the upgrade to TeamViewer version 12 in the hope of seeing an improvement in file transfer speed. Unfortunately it's still slow as ever with only 120 kB/s between clients that are connected to the internet with symmetrical 100 mbit/s. We transfer already compressed files (msi, zip), does this mean that the only optimization in TeamViewer 12 is file compression? That is utterly useless for 90 % of files!

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Julia

Hi all,

Thank you for your contribution here.

TeamViewer works on 80% of all connections worldwide via UDP. UDP protocol allows us to send more data to the devices with less networking resources, which allows us to achieve transfer speeds of up to 200 MBps.

When transferring files, as long as a UDP connection is present, a correspondingly fast transmission can occur.

If the UDP connection is not stable then there is automatically a fallback to TCP.

This leads to the fact that the file transmission can only reach 120 kb / s - this is integrated in TeamViewer and unfortunately cannot be changed.

The problem with UDP errors is that they arise in the respective network and we therefore have no information on what this is related to. Also, we have no chance to change it.

We already have a feature request regarding the 120 kb/s limit and I will also add you to this request.

Cheers

All comments

Julia

Hi all,

Thank you for your contribution here.

When transferring files, as long as a UDP connection is present, a correspondingly fast transmission can occur.

If the UDP connection is not stable then there is automatically a fallback to TCP.

This leads to the fact that the file transmission can only reach 120 kb / s - this is integrated in TeamViewer and unfortunately cannot be changed.

The problem with UDP errors is that they arise in the respective network and we therefore have no information on what this is related to. Also, we have no chance to change it.

We already have a feature request regarding the 120 kb/s limit and I will also add you to this request.

Cheers

Quarath

For me it is actually faster to upload the file (+1GB) to the cloud and then download it to the recieving computer. My question is why and how?

filetransfer

til now your file transfer feature are too slow! we pay for your software but we are not satisfied to transfer speed. please fix it!! patch it!

Whoolie

The reponse from TV is **bleep**. Is this not peer-to-peer? Well, it sure seems like it's going through TV servers. This is during a slow file transfer:

[TeamViewer_Service.exe]
TCP 192.168.87.102:52165 dk-cph-anx-r005.teamviewer.com:5938 ESTABLISHED

So what you've done is that you've throttled the speed to keep costs down for traffic handling - why not just say that? Well, you probably don't want people to know that their file transfers are going through your servers.

Chancel972

Hello.

I confirm that for some time and with the same types of connections, the transfer of files has become very slow. 100mb 15mn (previously 100mb 1mn).
This is really a big problem.
The version used on the 2 PCs is: 13.1.1548. PCs are in Windows10 Pro with the latest updates.
Connections are made with Orange Fiber Pro.
A few months ago and under the same conditions, I did not have this problem ...

Best regards.

Jacky

AlexFogerty

Hi Julia, your post explains so much, including another issue I have with TeamViewer, the file transfers often end up corrupted and unusable. The problem with UDP is that it has no error checking, and should only be used for the likes of video where data arriving out of sequence or corrupted can safely be ignored (e.g. the video component arriving after the audio, or vice versa), which explains the corruption of data issue.

We have got to the point that we are using cloud based storage systems to transfer files to clients, or if they're close by, using USB flash drives.

drandre

File transfer speeds use to be much better than this. The file transfers appear to be at 72 kbps to 100 kbps. When I have a symetric 90 mbps connection and the machine I am transfering files is on the same network, it does not make any sense.

Teamviewer, please fix this issue. Once I am connected into a machine, the software should be able to hand off and provide machine-to-machine data transfer rates.

I thought this only had to do with our version 11 but it appears everything up to the current version is experiencing this problem.

glnz

Why is TV so slow to transfer files? I can see that my current transfer is stuck at 1Mbps. (Like dial-up!!!)

Both my computers are Win 7 Pro 64-bit. One has 100 Mbps internet access and the other has 1Gbps !!! (And I just rechecked both.) Both have TV 13. And this snail-like transfer of one file is occurring over two weekend days now, Saturday and Sunday, when presumably the networks are a bit less hectic.

This can only mean that TV itself is choking the speed. The promise that TV13 would transfer files at up to 200 Mbps is FALSE.

kilyan

i confirm the transfer speed is embarassing...

mansol

537mb file via we transfer 7 minutes both sending and receiving

44 minutes via teamviewer

A_Krastanov

try with VPN and you will see the speed is increasing but no one tels you why.

DF-MikeT

We have recently transferred to Teamviewer from a competitive product and are finding access good but file transfers much slower. Any tips regarding how to improve the performance of this area of the solution.

mansol

Although we like teamviewer for most things - file transfer is still unbelievably slow. For any large file moves we have taken to using wetransfer.

mansol

Seriously you use a protocol with no checking for file transfer and then throttle a protocol with checking.

In my case transfer speed via teamviewer is about 1,5Mbps - not too bad. But via ftp it is 90Mbps. So it is probably not an UDP-TCP issue and it is still much faster to make a two step transfer via ftp (waiting for upload on the other computer and download that file on the other) than teamviewer.

Bright68

We have the same problem...

newest TW clients 1,2 mb speed :-/

My network 100/100 mbit

client network 400/680 mbit

both computers windows 10 with SSD drives

//Braitan

estauffacher

Unfortunately I agree with pretty much every one else here. The transfer speeds are so slow we are thihnking about moving to a different remote software. Maybe one that has better speeds and doesn't cost so much every year. Please fix asap or we will be forced to move on from TV.

thanks

abri

I noticed that this slow file transfer **** came about 2012-2013. Before that it was as fast as your internet connection would allow. Since transferring files between two clients is a really easy non-complicated task I suspect that they are using (forced?) a MITM filter or other kind of moderation. Blaiming it on UDP (with automatic fallback to TCP), well... duh. We've solved it by using WebDav, FTP and different cloud services for files instead of Teamviewer. Both the free and PaidLicense versions behaves the same

Busser

Hi TeamViewer

Will you please work on the Transfer speed in your product.

Transfer 800MB takes on 1Gbit internet connection about 1.5 Hours.

Upload to dropbox and then download it on the client computer 2 min max.

Cant be right that we are paying a licens for this ...

beast-usa

Two and half years later and this is still a problem in the newest version?

So I saw 200MB/s possible?
Testing on two of my computers on my router 10/100/1000, confirmed Anti-Virus WAS NOT BLOCKING UDP. File tranfer between computers Linux to Windows, Windows to Linux via share 123 to 153 MB/s. Start transfer on TeamViewer 128 to 130 KB/s! Use UDP checked on both under advanced options. They are three feet apart on the same router and still 130 KB/s MAX.

I wish you guys would really fix this it's just nuts it's been over two years. Then dump the HUGE horrible new interface!

gwg

how do you tell if the connection is UDP?

RobvanRooijen

This solution is not really a solution. I have tested several systems for remote support and when I tested TeamViewer a movie of 5 Gb was send in a minute or so.

So now we choose TeamViewer and I'm busy to explore all features and now the file transfer speed is 2 Gb in 4 hours.... I'm still using the same test systems as before, also the TeamViewer version did not change, so what can I do to speed this up?

Kind regards,

Rob

RichaarK

Hi,

I've never seen or heard such a pathetic explanation for excruciatingly slow file transfers.

Please find another excuse.

cpmcgrath

Well, I found the log, and it makes it pretty clear that UDP is not getting blocked

I would post the log but your website isn't letting me. I emailed it to support @ teamviewer which told me to use this site instead where I can't post the information that shows a udp session successfully connecting, getting these errors (Edited to make them be able to be pasted here):

DataTransceiver: DataTransceiver - FileGroups::GetFileGroupByFileIndex: index is out of range
DataTransceiver: DataTransceiver - FileTransferProgress::GetCurrentTransferredFilePath: fileGroup is null
DataTransceiver: DataTransceiver - FileTransferProgress::OnFileAdded: fileGroupCount LESS THAN OR EQUAL 1

and then getting capped at 120 kb/s

millsaz

Dear TeamViewer,

As and IT Professional I use file transfer often in prior versions, but it seems this is the worst file transfer speeds ever in 14. I don't understand why this wouldn't be a priority for a product improvement since I believe most of us need file transfer.

I have tested the transfer speed using a 300/300 Mbps Fiber connection on both sides with 56kb modem TV file transfer speeds. I have done file transfers on my local 10Gb network and see a very minor improvement.

As others have stated using UDP is 90's technology when you have TCP, but it doesn't make any sense why you would throttle the speed. Now if it's an issue with screen refresh then all you need to do is use some type of QOS policy to utilize the connection full bandwidth, but make screen processes the priority. TCP allows for resume so you should be able to pause file transfer and resume to keep screen refresh, keyboard, and mouse active at all times.

JoeBeau

Uh, nice story, but why did this network problem never occur with version 11? I only 4an into real slow downloads after TV forced me to drop version 11 and go to 14 (I think that is the current one). I see several complaints after version 11 here. Yet, you make no mention of how you hobbled TV after that version to explain the drastic slowdown. No explanation except the gods willed it? Hm, not buying that..

rcorrea

Two years after this post, I'm having the same problem and I can't find a possible solution from Teamviewer staff people.

Does any one knows what's a possible solution? I'm working on a Mac Mini, 3.2 GHz Intel Core i7, 16 GB 2667 MHz DDR4. Internet speed on both ends is over 100 Mbps.

scatudal

Same here,

No mather where i connect it's always that slow. There is clearly some throttle going on with teamviewer. I ran a test one night at 3AM from one of my office servers to my system at home. Being the admin, i knew there was absolutely nothing happening that night, no maintenant, network was just quiet.

Office link : 100/100

Home link : 1000/1000

Yet... i simply couldnt go higher than 1mbps.... Tested with both a personnal free acount and our corporate one.

Same test from our ftp server, i topped of the office link at 100mbps...

As Abri mentionned, we now simply use other methods for large file transfers. Either cloud or FTP. It's a bit sad though, as it requires additionnal steps for no reason, when a simple drag and drop should work (as it does with Competitors such as Dameware).

Leo69cn

" Julia repeat the same lines over the years" ...Do not worry ...it's coming google ...

[link removed per Community Guidelines]

for now it does not do the file transfer but soon it will do that too ...and if temviever will not do anything, I know that they will lose many customers who pay a lot of money for his licenses ...run teamviewer run

Leo69cn

Julia,

your is not a solution...

After asking for renewal every year and paying a lot of money to go to corporate when you give me a product that makes 200 downloads always as advertised when my clients and I have VDSL2 V +?

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