it does the following

1. disables animations

2. hides cosmetic post awards

3. make the emoji search execute only when u press "Enter" instead of executing everytime u type a character

4. hides signatures

you can enable it here https://rdrama.net/settings/content

and you can see a list of ppl who enabled it here https://rdrama.net/poorcels

EDIT: made it device-specific, so u can be a poorcel on mobile, but normal on desktop