I get over 200 ping and frequent dcs when playing on the NA server. I actually live in JP, so my ping would improve.
I dont have much info but I assume the skill level is extremely low, and I dont want to go to JP server and play AD 
and still go 50-0, ruining the game for new players. Its so unfair. And Im not going to troll around and suicide, then theres no point.
What should I do?
At most you would just rise in rankings a bit then be matched with people of equal skill.
It comes down to
A) do you want to spend money moving your account / making a new one for lower ping
And B) are you willing to adapt to a different playstyle? Each region has their own meta and strategies that other regions don't use. I don't know much about JP though.
You ask the playerbase a question then your entire post is why you don't want to actually change, either change servers or don't but you obviously made your mind up already.
I doubt you will even get to challenger so dont worry about it if skill level is all you are worried about. Go play on japan.
If you live in Japan, then yes, this is the best option for you.
