Connection score went bad nowadays

Last week and a few days ago i was receiving a stable ms like 30 ms last week maybe it was before this last minor update. When review my previous matches on connection history, my connection point was always 90+

But this week my ping is so wavy, it is not stable at all. 

These are the games i've played on 12th April as you see my connection score was above 90 always. I had no problem in the game.

But nowadays despite i still use the same internet and there is no internet speed problem (i've tested) i got these connection points less than 90 and even worse than normal points. 

To troubleshoot, i've also contacted my ISS side (my internet provider) if it is a routetrace problem but they said that it is server problem of EA because they are based in distanced place. 

What can be the issue?