I have read your attached log.txt file. You could be correct as well. Not knowing where you reside yesterday to me was Saturday and LRs website was viewed on Saturday and again today Sunday at 6-00pm.
The following link at https://www.x-plane.com/kb/x-plane-11-30-release-notes/#Release_Candidate_3 indicates that it is still in release candidate v3 testing ie still in testing phase having gone through private testing, Beta testing and public testing V1 and V2.
Normally when a version is officially released for general public use I receive a private email from Laminar advising that an official release has been made. In addition X-Plane.Org would be sending messages out advising of the new official release. To date none of these messages have been received.
In addition either as a personal message from Thomson (Laminar Research) or a comment by him in the last week or so in this forum he indicated that the testing phase is still ongoing.
Finally if 11.30 was officially released Steam would be blowing their trumpet touting business to purchase the hybrid version from them.
Unfortunately there is no going back and you like many others are having the same frame rate problem which needs to be fixed.
I don't dabble in experimental versions.
Hopefully your dilemma will be fixed soon.