I just found out why am I having trouble getting a win-streak with the usual strategy, and it appears that I've broken my previous highest rating again. However, I also noticed that losing at this point doesn't take much points as it did before - I've been losing more often lately but I'm surprised that I barely lose a hundred points unlike before that shreds about half my rating points.

If I'm not mistaken, this is the highest amount of credits I got from the loot chest. I'll keep them until I accumulated enough credits to do anything with them.