Yup; you’re only as fast as the worst bottleneck. … but keep in mind VPN Policies, found under GL GUI → VPN → VPN Dashboard → Global Policy can allow considerable flexibility. Example: you know the domains &/or IP addresses of everything your work-related software uses. I do mean everything. That information can be added to ‘Based on the Target Domain or IP’. Thereafter just that traffic goes through your VPN, leaving you to surf everything else in the ‘raw speed’ of your local (relative to your location) ISP’s bandwidth.
You would have to be really sure you’ve got all those domain names/IPs, though… least one sneak through, giving away your real IP/location.
I would put that Slate AX as the Server connected to whatever network resources you wanted to share out to your Clients. For example, if you were self-host a video conference platform like Jitsi on a machine in your LAN (traditional server role), the Slate AX’s advertised 550 Mbps WG speeds is going to be need much more to move that data in/out than just one feed/person as a client watching & interacting from the Beryl.
Also once setup don’t forget to back up all your devices: