Escaping is impossible

I feel like season 6 is very anti escape. not just in hard cc, but its much harder to get out alive with 15 hp after a fight. Now im not sure what changed to make this happen, but i remember the 2015 season pretty well. I escaped from so many situations with low hp consistently. My friends and i used to say that i had a summoner passive reading "If i drop below 200 health, it becomes impossible to kill me." And this was because i would either get into these 1v1s in the jungle or be in a team fight and disengage right before i would die. I would then use all of the mechanics available to me to run around the whole map and just simply not die in seemingly impossible ways. I could do this frequently with champions such as rammus, amumu, morgana, quinn, sion, wu kong, nautilus, and vi. Yet, this season, it hasnt been happening. While im unsure of the actual numbers, lets say i used to be able to escape 40% of near death experiences, but this season im only escaping less than 10%. Im not sure what changed to cause this, but i know its not my person play style, and honestly, i think riot should be concerned if excellent mechanical skill is no longer sufficient for a player experienced with their champion to make it out from between a and a hard place