# App performance

**URL:** https://forums.rocket.chat/t/app-performance/4552
**Category:** Community Support
**Created:** [September 13, 2019, 7:42am UTC](https://forums.rocket.chat/t/app-performance/4552 "2019-09-13T07:42:15Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![thangse](https://sea1.discourse-cdn.com/flex021/user_avatar/forums.rocket.chat/thangse/32/974_2.png) [@thangse](https://forums.rocket.chat/u/thangse)
#### Post date: [September 13, 2019, 7:42am UTC](https://forums.rocket.chat/t/app-performance/4552/1 "2019-09-13T07:42:15Z")

</div>

### Description

- Hi team,

 ![35%20PM](https://us1.discourse-cdn.com/flex021/uploads/rocketchat/original/2X/b/b0d6129de9f3dea97c7fa8ae7ad38b0d24f376c4.png)

My Rocket.chat very lag when I login to account have alotof PrivateRoom?

And I call websocket that get history however it response all data (data very large). How to limit it?

 ![13%20PM](https://us1.discourse-cdn.com/flex021/uploads/rocketchat/original/2X/1/18e71475b3fc1bddf2cad8056532d168460db0ab.png)

### Server Setup Information

- Version of Rocket.Chat Server: 0.74.3
- Operating System: linux x64
- Deployment Method: docker
- Number of Running Instances: 1
- DB Replicaset Oplog:
- NodeJS Version: v8.11.4
- MongoDB Version:
- Proxy: 
- Firewalls involved:

### Any additional Information