Flatpak or Native package on Linux Mint?

The official .deb from the Obsidian site, seems to take longer to open than the flathub.org version, and both are 1.8.9. Of course, I want to avoid the flatpak due to the sandboxing, so the native package would be my choice.

The PC is very fast: Ryzen 9, with nVMEs.
This is the first package I have had not open in a blink of an eye. This is like 15 seconds to open with zero notes except the welcome.md
Any thoughts, while I do freshly reinstall of each package?