# Syncthing suddenly slowing down
**URL:** https://forum.syncthing.net/t/syncthing-suddenly-slowing-down/12035
**Category:** Support
**Created:** [August 23, 2018, 3:33pm UTC](https://forum.syncthing.net/t/syncthing-suddenly-slowing-down/12035 "2018-08-23T15:33:22Z")
**Posts on this page:** 7
**Page:** 2
### Author:  [@schneemensch](https://forum.syncthing.net/u/schneemensch)
#### Post date: [September 13, 2018, 2:48pm UTC](https://forum.syncthing.net/t/syncthing-suddenly-slowing-down/12035/22 "2018-09-13T14:48:37Z")
As I said before: I do not run with any limits.
I will do that, when I see the issue the next time.
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### Author:  [@calmh](https://forum.syncthing.net/u/calmh)
#### Post date: [September 13, 2018, 2:52pm UTC](https://forum.syncthing.net/t/syncthing-suddenly-slowing-down/12035/23 "2018-09-13T14:52:24Z")
Not the limiter then, I think. 🙂 I’d probably start with STTRACE=model. You can enable this in the GUI too, when things are slow, without requiring restart. It shows quite a lot about what it’s doing when syncing, but not necessarily exactly what’s taking time. You can redact file names reasonably (i.e., keeping unique things unique) before posting.
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### Author:  [@schneemensch](https://forum.syncthing.net/u/schneemensch)
#### Post date: [September 13, 2018, 2:54pm UTC](https://forum.syncthing.net/t/syncthing-suddenly-slowing-down/12035/24 "2018-09-13T14:54:37Z")
Thanks, that is what I was asking for. I already looked into the different debug logging options, but they were not very clear to me.
I guess logs of the master and the slaves are relevant?
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### Author:  [@calmh](https://forum.syncthing.net/u/calmh)
#### Post date: [September 13, 2018, 2:55pm UTC](https://forum.syncthing.net/t/syncthing-suddenly-slowing-down/12035/25 "2018-09-13T14:55:13Z")
Probably, until we know on which side the issue is caused.
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### Author:  [@schneemensch](https://forum.syncthing.net/u/schneemensch)
#### Post date: [September 13, 2018, 3:12pm UTC](https://forum.syncthing.net/t/syncthing-suddenly-slowing-down/12035/26 "2018-09-13T15:12:45Z")
I am probably not able to share something today since I had to restart them due to a bug in my script. I will try to find a test run tomorrow.
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### Author:  [@AudriusButkevicius](https://forum.syncthing.net/u/AudriusButkevicius)
#### Post date: [September 13, 2018, 5:02pm UTC](https://forum.syncthing.net/t/syncthing-suddenly-slowing-down/12035/27 "2018-09-13T17:02:29Z")
I say I suspect limiter because we still wrap the connections, and I recall some infinity handling funkyness.
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### Author:  [@system](https://forum.syncthing.net/u/system)
#### Post date: [October 13, 2018, 5:02pm UTC](https://forum.syncthing.net/t/syncthing-suddenly-slowing-down/12035/28 "2018-10-13T17:02:34Z")
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