# Media Cache Tuning - Bad buffering/lagging

**URL:** <https://community.wowza.com/t/media-cache-tuning-bad-buffering-lagging/45602>\
**Category:** Wowza Streaming Engine\
**Created:** [January 17, 2016, 6:56pm UTC](https://community.wowza.com/t/media-cache-tuning-bad-buffering-lagging/45602 "2016-01-17T18:56:12Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Logan\_Douglas](https://avatars.discourse-cdn.com/v4/letter/l/cab0a1/32.png) [@Logan\_Douglas](https://community.wowza.com/u/Logan_Douglas)\
**Post date:** [January 17, 2016, 6:56pm UTC](https://community.wowza.com/t/media-cache-tuning-bad-buffering-lagging/45602/1 "2016-01-17T18:56:12Z")

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Hi Everyone

In the weekend we had a stream of 300+ people.

However as soon as we hit 300 people buffering/lagging issues started to appear amongst 90% of users.

I then made changes in Media Cache Tuning and the buffering dissipated and only had image lag issues after 20-30 seconds of streaming.

Using Google Compute, on a large instance - 16 CPU’s, 108GB Ram.

The server wasn’t under huge load ( only used 10% of server resources )

What changes can I make to stop the buffering/lagging?

I’ve read the documentation however doesn’t seem to make much sense when i made changes that breach what the documentation specifies.

Thanks!

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**Author:** ![Andrew\_Ramberg](https://avatars.discourse-cdn.com/v4/letter/a/7c8e57/32.png) [@Andrew\_Ramberg](https://community.wowza.com/u/Andrew_Ramberg)\
**Post date:** [January 21, 2016, 3:41pm UTC](https://community.wowza.com/t/media-cache-tuning-bad-buffering-lagging/45602/2 "2016-01-21T15:41:05Z")

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Hello,

Could you please describe what properties you changed? Also please reply with your current , Min/Max TTL and settings?

Best regards,

Andrew