Hotel wifi drops my video calls every ten minutes, will a travel router fix it Gear & Connectivity

A travel router will not fix hotel congestion. What it fixes is the captive portal, letting all your devices on with one login, keeping your traffic on your own subnet, and giving you failover if it takes a USB modem or a second SIM. Those are real, but they are not your symptom.

Your symptom, freezing every ten minutes with fine speed tests, is packet loss or a roaming event, not bandwidth. Speed tests average over ten seconds and hide both. Diagnose it properly before you spend anything: run a continuous ping to a reliable address and leave it running through a call. If you see loss spikes at the moment the call drops, it is the network. If you see the ping stall entirely for two seconds and then resume, your laptop is roaming between access points, and the fix is to lock onto one band or one access point rather than letting it wander.

In hotels I get most of the way there by connecting to the 5GHz network only, sitting nearer the corridor access point, and if the room has an ethernet socket, using it. Wired hotel ethernet is often untouched and excellent because nobody uses it any more.

For the data problem specifically, stop using your home plan for hotspot. A local eSIM data package is usually cheap, often ten to twenty for 20 or 30GB for a month, and it is bought in three minutes at the airport gate. I now treat hotel wifi as the backup and the eSIM as the primary for calls, which is the opposite of how I started.

Before blaming the hotel, test the same call on the same laptop on your hotspot for a full hour. You said it works, but ten minutes of working is not the same as an hour. If it eventually stutters on both, the common element is the laptop, not three hotels.

Audio only fallback is a legitimate tool. Half my client calls do not need my face, and dropping video takes the requirement from megabits to kilobits. Nobody has ever objected.