In fact I renamed my VST folder, because there was a mistake with its display inside. It's strange but the sub-folders which were inside were not displayed, and all the small files which were supposed to be in these sub-folders were in the folder. After changing the name, the sub-folders reappeared, so I scanned this folder on my DAW and finally everything works correctly.
I think that the POD X3 ASIO had difficulties to find the way to get to the VSTs, hence making the CPU to work more. But what is strange is that ASIO4ALL didn't have such difficulties.
Thank you very much Uber Guru for trying to help me, but I already tried to use the POD X3 ASIO and the problem was still there. Anyway, now it works. And even if I changed the name of my VST folder, all the VST and VSTI parameters have been kept. This is great !
I hope this experience will help some of you who may have meet the same problem.
