PSG is already showing some signs of weakness in them after they were humiliated by Chelsea in the CWC finals. PSG might not go as far as we expect them to go in UCL this season. However, they have always played in the semifinals for three consecutive seasons in recent of times. This season might be a different one for them, though, most of the big clubs are having little challenges in their performance.
We'll see if PSG can still advance to the Champions League semifinals this season. Generally, PSG still has the strength to advance to that round if they can continue to make significant improvements in their Champions League matches. Although, on the one hand, I'm starting to doubt PSG after their failure to win against Chelsea, at least there are teams who can read their key if PSG continues to use the same strategy this season. Furthermore, several teams in the Premier League and La Liga have made significant changes to compete fiercely in the Champions League this season, and this will certainly make it difficult for PSG to advance further in this season's Champions League.