Hello, I can’t give you any tips in general about this.
Look at your performance stats with the latest version and with the previous version that you feel was faster. For every measurement, load the page once, then load it again a second time to measure performance, to make sure that you are measuring cached responses.
If you know that some specific part of loading the page is taking too long then we can start looking into what is causing it and what we can do.
Another way to look at this is at the network tab, where you can see which asset was loaded at what time. If you see an asset being delayed for 3-4 seconds as you say, then that is also helpful.