It's simple, open this project on turbowarp here, https://turbowarp.org/1379536951?clones=Infinity&fps=60 (You can enable or disable turbomode to go faster or slower if needed!) Try to keep it open a while or see where your frames start dropping fast! If you don't believe the clone count, open the editor for the turbowarp page, it will show the number of clones. I was able to reach 304416 clones! (A word of advice, DON'T GO INTO FULL SCREEN OR YOUR FRAMES WILL DROP BY 60%!)
All me except the fps counter! @Aarush_Saxena2 did the fps counter!