Hello,
We need to determine whether the game itself requires a lot of bandwidth by default or if the issue is caused by other settings.
Before starting the game, you can first run a speed test to measure your baseline internet speed. Then start the game and run another speed test to see if there is a significant drop in bandwidth. If you see a noticeable decrease in your internet speed (both upload and download) when you start the game, it suggests that the game is using a substantial amount of bandwidth. Certain games, especially those with high-quality graphics, real-time updates, or streaming features, require a lot of bandwidth to function smoothly. This could be the case if the drop in bandwidth is significant.
Ensure that your router's Quality of Service (QoS) settings are configured to prioritize gaming traffic How to Use Quality of Service (QoS) to Get Faster Internet When You Really Need It (howtogeek.com)
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