All good here post-install. I’ve got 1.58, and the plane flies great. I also checked out the frame drops. I believe it’s from the update turning on v-sync and rolling cache, two things most don’t use in the sim. Once I turned them back off, the performance I’m used to came back.
IMO, the 787 is the best airliner on the game once you get some time to learn it. The 747 was giving me fits. That thing is like flying a tank.