Slow performance when user jump between pages

When user jump between pages, it's very slow to switch to new page and it happens like couple weeks ago to now. Sometime user thought it request clicking twice to go to another page but it's not the case and it's just slow. It took 5-10 seconds to go onto another page.

Here are couple screenshots for one of page performance. Anything we can try to improve the performance? Thanks in advance!

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