This is what happens when people's ranks get dropped every month. You end up with people outside of your skill level being forced down into lower tiers in week one. Typically, this is where things do get better.
However, with this particular event, we have an issue where DR rewards are dishing out untradeables when the pack states tradeable. There is 0 incentive to climb back up to the top because you get punished with bugged rewards. So until the bug is fixed or we reach the last couple of days, most of the usual Championship-level players will be seen in lower tiers.