Solo Q placement timing and current state of Solo Q

I have two accounts, wegs XP and wegs NA.

Wegs XP is my main, finished plat 2 at the end of season 6, and on smurf i finished (approx) gold 5.

On my main i did my first 10 placement games on the first day or two that ranked came out, record was 6 wins and 4 losses and I got placed into silver 3 (or silver 2 I am forgetting). This was expected more or less, I honestly thought I would get silver 1 or gold 5 but as riot had warned I knew to not think i would be placed very high. ?

HOWEVER, and the real stink of it, on my smurf account, on which i finished Gold 1 at the endof season 6, I actually managed to have 3 wins and 7 losses (lost my first three) and got placed into gold 4. So my smurf account, which was ranked lower at the end of s6, and did considerably worse in its placements, got placed almost a full division higher.

After talking with friends that have similiar stories, I have realized that WHEN you complete and or attempt your placement matches for solo Q greatly effects your placement into the ranked divisions.

Yes this is annoying, as it takes several games for you to rank up back to where you "belong". BUT the real problem i started to notice is the game quality. Very often I see (season 6) plat players, in the same game with actual silver players, and this is because the silver players finished their placments much later and thus got placed higher.

Anyone else notice anything like this? Or have any experience that contradicts what im saying