Me and a mate played with the exact same mod pack before, we even played 2hrs yesterday perfectly fine however today when I made a new world with the same mod pack so another mate and myself could play together, we go anywhere between 5-15 mins of playing before I get booted for lost connection as the host.
Nothing has changed other than the person I'm playing with and I doubt it's a network connection as the mate I was playing perfectly fine with is across the world from me whereas the mate I'm playing with where we are getting this issue is my roommate.
Logs are below.