game freezed when random tick speed is set to 9999999

I have set the rts to 999999 or more and the game couldn't "load" any blocks

 

I don't know if this counts as a glitch because I have seen his on other versions too

Video:

https://youtu.be/K0cqiohdDAg

 

i might be wrong and this is not a glitch but when i loaded the world again after ending Minecraft on task manager the world loaded back