System stutter when downloading fast

[Ether Zhang]

I have a desktop PC, whenever I'm downloading something, once the download speed reaches 50MB/s or above, my whole system begins to stutter, I can hardly move my mouse cursor, and sometimes when I'm trying to make some moves, there can be "beep, beep" sound from my speaker, kind of like when you press down too many keys at the same time on old computers.

It seems the system I/O is jammed?

 

It happens when:

- Downloading using Chrome, Steam, Bit torrent or anything else, so it's not a software issue;

- Downloading file to PC SSD, PC HDD, and my local NAS, so it's not a disk drive issue;

 

It not happens when:

- Download speed is slow, like below 40MB/s;

- Transfer files from NAS through LAN SMB, it can reach 100MB/S without stutter (because SMB is single-threaded?).

 

Other information:

- I did not use any antivirus software, and I tried to disable Windows Defender as well, but that did not help;

- When the stutter begins, CPU utilization is only around 30%；Tempretures are all looking good, nothing overheated;

- I tried to update the network card driver, nothing changes;

- Other devices in my home, like my another Windows laptop, does not have this issue, though it is using wireless network instead of cable.

 

My hardware information is below:

- CPU: Intel i7-6800K

- MB: GIGABYTE GA-X99-UD4

- Memory: G.Skill DDR4-3000MHZ 8G x 2

- GPU: GIGABYTE RTX2080Ti Gaming OC

- PSU: SeaSonic GX850W

- OS: Windows 10 64bit 22H1

 

What can be the possible cause of this problem?

CPU? A hardware bug of Broadwell-E architecture?

Mother board? X99 south bridge I/O bottle necked?

On board network card? FYI, it's Intel I219-V

Or some software/OS configuration error?

 

 

[johnno23]

The only thing I can think of is that you might possibly have file indexing on and it is trying to keep track as you download and write to disk.

have you checked that file indexing is off or set to normal and not enhanced. Enhanced under win 11 will try to index literally everything ? So ity will be indexing as you download things.

Your speed is nice so maybe you could experiment a little and see at what point it stutters.

you say fine at 40MB sec but how about 45 or 47 for example. You could try finding the sweet spot where it maxxes speed without stutters and cap the speed at that point. ?

Not a perfect solution but doable if you cannot track down the issue in the meantime. 

 

[Ether Zhang]

2 hours ago, johnno23 said:

The only thing I can think of is that you might possibly have file indexing on and it is trying to keep track as you download and write to disk.

have you checked that file indexing is off or set to normal and not enhanced. Enhanced under win 11 will try to index literally everything ? So ity will be indexing as you download things.

Your speed is nice so maybe you could experiment a little and see at what point it stutters.

you say fine at 40MB sec but how about 45 or 47 for example. You could try finding the sweet spot where it maxxes speed without stutters and cap the speed at that point. ?

Not a perfect solution but doable if you cannot track down the issue in the meantime. 

 

I tried to disable indexing, didn't fix.

I think index only works on complete files, it shouldn't scan raw incoming network data while the file is being downloading.