MM is...questionable, to put it lightly

So if I had to give a number from the past 20 matches as killer how many have had at least 3/4 survivors be between red ranks 1-4, I would say a solid 15/20. To be fair, I used to be a red rank 1 killer a little over a year ago (long before the MMR system rework), however, I feel like since I'm getting back into the game as of a week or two ago, it's a coinflip as to whether I go up against a 4-man red rank SWF or a solo queue red rank group. I understand I was a rank 1 killer over a year ago, but surely you can't expect me to perform at the same level after taking a whole year off from the game. I'm currently Silver 3, however about a good 80-85% of the games I play have at least 3 red rank survivors I'm going up against. Only about 15% of my matches I play have a majority of survivors that are in my rank range (ash-gold). I like this game, I really do, but it gets tiring having to sweat to barely get a 2k against some of these groups I'm getting put up against.