GOW4 - Percentage won't move at 99% on Diamond 4 despite multiple wins

Hi. I’ve run into an issue in GOW4, I’m playing 2v2 gnashers and I’ve been at 99.42% on diamond 4 despite winning multiple games in a row with zero losses. Majority of the games are blowouts 7-0 or sometimes 7-2

I think at this point I’ve won 20+ in a row and the percentage has not moved 00.01%
Players I’ve beaten ranged from diamond 2 to onyx 3 for the matches and still nothing has changed. How many games do I have to win to move at this point? I’ve never seen this before.