Feedback on Substance 3D Stager

I've used the new stager for about 8 hours now, and have some feedback (Build 1.0.0-20210616.r.5070-67fda79, Windows 10 21H1 x64, Razer Blade 15 laptop with NVIDIA RTX 3070, 16GB RAM, Samsung SSD 970 EVO Plus 1TB storage).

- First, the Help->Give Feedback... option isn't working. It goes to a page with a 404 error.

- If I start a render then alt-tab to another application, I can go back and see the render status right up until it is nearly done. However, if the render finishes while I'm in another application, it says 'Render status: estimating...' for a LONG time before finally coming back. The rest of the UI is responsive, and the render is actually done and saved, but I have to click Cancel All or wait >10 minutes for it to figure it it.

- Stager is a major memory hog. I added 16 cubes each with a material on them, mostly variations, but it uses 100% of my 16GB already. Seems like memory management could be better implemented in Stager for improved performance? With this much memory use it takes > 10 minutes to load this scene back up, constantly paging memory in and out!

- The save file is also 16GB in size! Can't you link to the materials externally rather than embedding them?

- It doesn't look like material instance randomness is working. I changed the random seed on each cube, but the material doesn't change (each row in the attached image is the same material with a different seed).