F3D stl reading is not fast as it could be

[mwestphal]

Describe the bug
As reported here https://papas-best.com/stlviewer_en and by other users F3D is slower than other solutions to open .stl files

To Reproduce
Steps to reproduce the behavior:

1. Open the file using f3d --no-config Fantasy_Castle.stl
2. Wait for opening -> 2s
3. Same with fstl -> 1s

Expected behavior
Performance should be in par with fstl
Proper profiling needed.

System Information:

• OS: Any
• GPU and GPU driver: Any

F3D Information
Paste the content of f3d --version or f3d-console.exe --version on Windows: 3.5.0

[midaksh]

Hey, @mwestphal can I take this, might have to research a bit if that is fine?

[mwestphal]

Sure, please note this is more of an investigation in order to figure out what could be improved potentially.

[midaksh]

Okay, will ping you on discord for a new thread regarding the same.

[Meakk]

Some improvements in #3458 and #3463