Credit to @griffpatch_tutor for the speed test. This uses the fastest pen text engine currently on Scratch, but it's still not fast enough. It usually renders 1050 - 1100 usernames on my computer (1153 is the fastest I've gotten), which is well above 800, but it still may not be fast enough for slower computers. This also means it is fast enough to render 10 usernames at 60 FPS, but that would require most of the CPU time allocated to Scratch and I'm not sure if Scratch can display 60 FPS. I tested this on a Ryzen 5 1600 CPU. Pen Text Engine used: https://scratch.mit.edu/projects/163809193/