Wireguard Site to Site Tunnel connection Lost after transfer of 6 to 8 megabyte data

Hi,
I am observing a weird problem, my connection over wire-guard tunnel collapse after transfer of 6 to 8 MB of data

Need help

It will be easier to help if you provide a configuration without sensitive data.

/export file=yourconfig hide-sensitive

Sun is shining here.

That's about the same level of information you gave.
How do expect anyone to help if you do not give more info ?

What devices on both ends ?
Connected to internet how ? Ethernet, PPOE, LTE, ... ?
How is your config on both ends ?
Other peer devices on that same wireguard connection ?

I pull on a daily basis about 11Gb over Wireguard from a work server to home NAS (since copying if needed afterwards to my local PC goes a lot faster when I can get it from that NAS).
Works just fine.

Hey easy on the new persons asking questions.
Look to yourself and your masters for not providing any modicum of training/instruction/sandbox for new posters so that they can learn to ask good questions from the get go, and thus providing US with a really excellent set of facts to work from!!