Hub 3 can I cap device bandwidth?

Hi,

My partner downloads and uploads large files for work.

This causes every other device connected to our internet to stop working entirely (download//upload speeds close to 0)

Is there any way we can cap the download&upload speed for devices so that the bandwidth isn't taken over by a single one?

Are there any alternative methods to solve the problem?

We have virgin media hub3 as our router.

Thanks!