Well, you never know, perhaps the top 4 players lost even more time than I did. But indeed I missed an opportunity to do a really good perf in terms of position as well as of timing (I tried again the last puzzle a few days later, and solved it quite easily). Still, 5th is not bad and since a few months I do less mistakes than I used to, so the tendancy remains positive. Thanks and congrats to you too for a good perf !