One a big problem of Madrid now is inconsistent to hold their performance along the match. The team sometime appears dominant, but then experienced a significant decline their performance. Ancelotti must pay attention to this problem. We don't know what is problem between player, or something happen with anceloti strategy, if this inconsistent not fix it immediately will have an effect to player confidence and cohesion. Madrid have the star player, but sometime many people asked about the squad depth, so if any star player injury that also impact with team and make the performance decreased drastically.
Yes you are right Real Madrid inconsistency is big worry. They mostly play very well but then their performance drops suddenly. Ancelotti needs to fix this problem. Issue might be due to problems between players or mistakes in Ancelotti strategy. If this is not resolved it will hurt players confidence and teamwork. Real Madrid has excellent players but their bench strength is uncertain. When key players get injured it greatly affects team performance. Ancelotti must find main reason for this problem and solve it quickly. If not Real Madrid chances of winning titles will be affected.