Very slow to load snapshots
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# Bug Report

### Describe the Bug
On my iPhone or my Macbook, I launch Home and swipe to a room with a camera.. I see the camera tile with either a stale image or "No Response".  I immediately see the following on my Homebridge log:
```
[12/9/2021, 4:15:46 PM] [Ring] No snapshot cached for Living Room
[12/9/2021, 4:15:46 PM] [Ring] Loading new snapshot into cache for Living Room
[12/9/2021, 4:15:47 PM] [Ring] Snapshot cached for Living Room (1.196s)
```
However, it takes about 90s for the snapshop to appear on my device.


### Expected behavior
A relatively recent snapshot should appear in <10s.

### Screenshots/Logs
Logs in message, although there's not much info..

### Additional context
Homebridge 1.3.5, running in a docker container on a Synology NAS.
homebridge-ring v9.23.0

### Homebridge Ring Config
Post homebridge-ring platform config  _without sensitive information_
```
        {
            "refreshToken": "REDACTED",
            "hideDoorbellSwitch": true,
            "hideCameraSirenSwitch": true,
            "hideInHomeDoorbellSwitch": true,
            "hideAlarmSirenSwitch": true,
            "sendCameraMotionNotificationsToTv": false,
            "sendDoorbellMotionNotificationsToTv": false,
            "debug": true,
            "hideDeviceIds": [
                "438ad5a0-522b-4997-a3fb-15b2eef09ac9",
                "90d29cf8-9a44-4804-b342-6112945e0aae"
            ],
            "platform": "Ring"
        },

```
