The "loading terrain" screen is only shown in 1.18.2, my comparison time just differs because I'm not using identical worlds but the main comparison was to show the annoying "Loading terrain" delay which is only on 1.18.2. I recently found this issue: MC-249059 and it explains that for some reason the delay has been hardcoded in 1.18.2 to hide a different bug which is not really a good solution anyway.
Super Monis
The "loading terrain" screen is only shown in 1.18.2, my comparison time just differs because I'm not using identical worlds but the main comparison was to show the annoying "Loading terrain" delay which is only on 1.18.2. I recently found this issue: MC-249059 and it explains that for some reason the delay has been hardcoded in 1.18.2 to hide a different bug which is not really a good solution anyway.