LP doesn't adjust (70+lp loss for 8th place, 37lp for 1st place) no matter how many wins I have

I have attached my game history profile as proof.

I have played over 100 games in just the past week, and no matter how many top four finishes I have, my LP does not adjust at all. My 1st place finishes are always exactly 37 LP, and my 7th and 8th place losses (as rare as they are) are always over 50 LP and 70 LP respectively.

Take my past 15 games for example:

• 11 top four (1 x first place, 4 x second place, 2 x third place, 4 x fourth place)
• 4 bottom four (3 x fifth, 1 x seventh)

I get exactly 37 LP for a first place finish, exactly 26 LP for second place, exactly 16 LP for third place, and 5 or 6 for fourth.

And I lose between 5 and 10 for fifth place, between 25 to 30 for sixth place, over 50 for seventh place, and over 70 for 8th place.

These numbers don't change no matter what my wins and losses are.

This is aside from the issue that I lose more twice as much for 8th place than I gain for 1st place.

This can't be right. I should not be punished this hard for having a bad rng round once in a while. I'm still climbing, but it's agony suffering a single loss that completely reverses the past 4 to 5 wins.

I have watched top streamers and they never lose this much for bottom 4.

After this many top 4 finishes, my LP gains and losses should be balancing out more. Please let me know if this is normal, or if there is something wrong here. Thank you.