Lag Problem and Review Request

I am currently working on a Roleplay which includes many features. Currently, I am doing a Rework there, but the game is so laggy. Can someone review the game and explain to me what causes this lag?

Game link:

Quick annoyance:


“Inserting Workspace” “Inserting StarterGui” “Loading Character”, that took way too long :skull:

Client Bugs:


image
The chat is endlessly spamming :skull:

Phone gets cut off


Alr, onto the lag… I’m in a server by myself, max graphics, not experiencing any lag :man_shrugging:
After spending 10 minutes in the server, client memory is steady between 1906MB & 1908MB