From the intelligence we have seen so far, the Russians seem to be performing worse than everyone expected from a powerful Russia.
The progress has been slow, the difficulties they have faced, the bizarre tactics of sending small group of troops wandering around and got ambushed by Javelin/AT4, the inability to gain air superiority despite mass missile strikes on a large number of radar stations and losses due to Ukrainian drone strikes. They have gained some ground in the first two weeks (despite heavy equipment losses), but I am not sure they are still winning now, especially after taking account of the economic and political consequences.
I wonder how this will play out in the end, and how that would differ from their original goal? At the moment a peace treaty without too much territorial change looks likely.