Incorrect rating

Hello, I ask you to check my account, it seems to me lately I have been incorrectly rated in the “BattleGrounds” mode, for the top 4 they give about + 10, for the top 3 + 15-20, for the top 2 about + 35-40, the top 1 was sooooo long). For the top 6-7 they shoot about 70-80. Now I have a rating of 7800, before the update it was about 7500. Thanks in advance for your help!

i suggest you start by reading the available resources about internal and external rating