Why YSK: Until Lemmy version 0.18 address this bug, you can browse the front page without it being auto updated and spammed with new posts.
Just browse page 0 instead of 1: https://lemmy.world/home/data_type/Post/listing_type/All/sort/Hot/page/0 (1 changed to 0)
I set a link in my profile to All/Hot/Page 0 for Lemmy.world, following the link seems to work in the PWA. You could put page 0 links for the different filters as well. Crude workaround, but it works!