in other words, it turns out that I was still overtaken, specifically by Maximula (thankfully, at least it was him :p). And if I had skipped a stage, I wouldn't have lost my position.
You need to play well so that you don't get overtaken!!
Of course, if you complete a map in 80 days, roughly speaking, then you will naturally be overtaken, and your rating will decrease! It would be surprising if it increased!
I'm sure that you, Vitaly, could easily complete it in 5-7 days!!!