A few facts:
1. The latter email was sent in April.
2. You were told you unsubscribed in August.
3. The promo emails came in September.
Not quite the zinger you hoped for, eh?
There hasn't been an update to Gizmo in over 2 years. This isn't a Gizmo issue.
Yeah.. Only in the most basic sense.
I understand the intent to help. I'm just saying leave it to the developer from here (which isn't me or Litjan).
Is it possible to record a full video, including flight plan entry, and post it to YouTube so I can attempt to reproduce in the V1.8 beta version, please?
It's maybe hard to hear and easy to say, but the fact remains that your PC is basically minimum specs for X-Plane 12, there's going to be performance problems in some scenarios, maybe this is one of those times.
Laminar broke the window heating response and we are still waiting for a fix. In the meantime you can try a workaround script: https://github.com/pilsnerish/FlyWithLua-Scripts/blob/main/CL650_window_heat.lua