Unstable Connection - with very faster internet connection

Welcome to the Zoom Community, @JSlocumb

The most common cause of this is connecting to your company’s network via WiFi. This is especially problematic if several people are connected to Zoom over WiFi at the same location – and more so if they are connected to the same access point. Sure, the packets zip speedily from your access point through the firewall and out to the internet, but there’s competition for WiFi bandwidth with multiple users accessing video – not just Zoom video, but understand that Zoom video has multiple network channels to and from the Zoom servers.

If you are hardwired and having this issue, ask your IT department to do a network trace to determine if there are any other neutral issues that might be causing this. 

the issue only seems to be impacting zoom. Opening other websites, streaming from youtube, all working fine , no issues. 

I have the same problem with gigabit internet speed in a home with only Zoom losing Internet connection. It's become enough of a problem that I cannot record meetings for my group anymore.

I am having the same issue, and also have eliminated bandwidth or speed issues as possible causes; during a recent Zoom call our speeds were around 25 Mbps (as expected with our plan) and a technician at our ISP ran multiple tests showing all connectivity operating as expected. We had previously been able to use Zoom just fine, this problem only began within the last few weeks. So what changed that is causing this problem?
It has made Zoom effectively useless for us.

I disconnected all other devices, so only one computer was connected to the router, and closed all apps except Zoom. On one computer I uninstalled and reinstalled Zoom; no effect. On the other it is set to automatically update each time the app launches. The problem occurs whether connected through Wi-Fi or Ethernet cable.

It sounds like you're encountering network stability issues specifically during Zoom meetings, despite consistent internet speeds. Here are some steps you can take to troubleshoot and potentially resolve the problem:

1. Check for Network Congestion: Even if your internet speed is fast, network congestion can still occur, especially during peak usage times. Determine if there are any changes in network traffic patterns during the times when Zoom meetings are unstable.

2. Test Alternative Devices: Try using different devices (e.g., laptops, smartphones) on your network to see if the issue persists across all devices. This can help identify if the problem is device-specific.

3. Update Zoom Client: Ensure that all participants have the latest version of the Zoom client installed. Updates often include bug fixes and performance improvements that may address stability issues.

4. Check Router Configuration: Review your router settings and ensure that Quality of Service (QoS) settings are properly configured to prioritize Zoom traffic. You may also consider restarting your router

Google have replaced my fiber link, my router, and Wi-Fi to no avail.  I trimmed down to one user on a 1Gb wired network for testing.  Here is what I discovered.  

• The network runs idle with from 1 to 3 ms jitter, typically 1 ms. 
• When a Zoom meeting is launched, every device on the network experiences 20 to 5000 ms jitter and packet loss.   

I have not done traffic inspection, but I suspect malformed packets are causing router hiccups. In the interim, I have switched to Teams (a.k.a. Skype with a wrapper).