performance issue 1.3.4 vs 1.3.3
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**Describe The Bug:**
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When open HomeApp on iPhone it takes much longer until the values of the accessories are displayed with the version 1.3.4 (about 2 seconds) compared with 1.3.3 (instantly).

**To Reproduce:**
Switch between the two versions and open the HomeApp.



**Expected behavior:**
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**Homebridge Config:**
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[config.json.txt](https://github.com/homebridge/homebridge/files/6216626/config.json.txt)




**Screenshots:**
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https://user-images.githubusercontent.com/6040107/112738061-dd284100-8f5f-11eb-92ca-06d02daad2dd.mov


https://user-images.githubusercontent.com/6040107/112738063-ddc0d780-8f5f-11eb-89d2-6dc2efc9a700.mov




**Environment:**

* **Node.js Version**: v14.16.0
* **NPM Version**: v6.14.11
* **Homebridge Version**: v1.3.4
* **Operating System**: Ubuntu
* **Process Supervisor**: Docker 

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