No, I had some issue where i could only find a low population of people. I've been able to fix it so I can find the high majority of players on matchmaking.
I deleted my local storage of the game (uninstalled it). And just to be sure I deleted my installation of uMod (though I never ran it in almost 2 months). Rikuto suggested uMod was causing it due to some anti-cheat thing Steam/KT was doing.
Basically if you never received a crash while matchmaking then you had my issue. I knew I was fixed because first attempt at searching Any I got an immediate crash . Never so happy to see a crash.