On a typical Beatport page I have 100-150 audio tracks to listen to. Scrolling down lags out the visual assets which take about a 1-2secs to load. Audio tracks load slowly after any click. I'm using a M1 Macbook Pro (10core/16gigs of ram) with the latest version of Sonoma and the latest version of Firefox. My internet connection is 350+mps. This happens even if Firefox is the only app open with 1 tab.
Safari by comparison has none of these problems. I hate to leave Firefox but with nearly a thousand audio tracks to go through every month this is a deal breaker for me.