Splash Screen during loading

[catr1xLiu]

Is your feature request related to a problem? Please describe.
There seems to be a significant increase in loading time for the beta version. It takes about 15 seconds to load on my computer and around 30 seconds on the school's older machines. During this time, nothing visibly happens, which often leaves me unsure whether the program is still loading or if I didn't click the icon properly.

Describe the solution you'd like
A splash screen would be helpful in this case. It would inform users that the software is loading and prompt them to wait. This could help reduce confusion during the initial loading period.