Hi Ying,
Thank you very much for your help. I have indeed been testing the methods that you had mentioned. The oddest thing is that using the GPP way to display archives, pagespeed scores are lower. In particular, LCP and Total Blocking Time are higher causing the lower score. Interesting.
May I ask 1 more question?
If you take a look at the home page, how can GPP users set up multiple sections of Posts based on categories, tags and chronological. The homepage has 3 of these sections. Any more advice would be greatly appreciated.