Hello kosta,
I'm sad to hear your regret and completely understand your frustration. Point 1&2 I have not seen before and we should definitely take a look at what could be causing the frame drops. Please load into GVAC airport and enable your in-sim FPS overlay. Once you have done that, send a screenshot here.
As for point two, would you please grab me a quick video of this? I have yet to see this.
Point three, admittedly, the fix for this is sadly more extensive than we thought and I understand I may sound like a broken record but we are indeed in the process of resolving it. I cannot say status but I know the team is actively working on both touch-down animations as well as the the general "weight" feel as mentioned here: https://forum.inibuilds.com/topic/26497-dynamic-suspension-based-on-gross-weight-and-animation-on-landing/page/2/
Again, I apologise for the inconvenience and hope you will continue to enjoy the product regardless!
Thank you 🙂