This is happening about 97% of my matches and I just re downloaded this a few days ago. In the middle of the match it will freeze / reconnect host/ either puts me back in or kicked to loading screen frozen until I guess the match ended or just came back. Every time that happens I get a ban and now its getting longer every time. This has been 3 days straight now.
As this appears to be an issue with your game, we recommend heading over to https://aka.ms/HaloSupport for further assistance. Please review the latest known issues and submit a ticket if your issue is not listed.
Thanks!