Computer lags/locks on classic.minecraft.net

Hello,

I wanted to try out classic.minecraft.net again, and put it fullsceen.

It was for some reason zoomed in, so I zoomed it out.

Until it lagged my computer immediately. With 1 fps I managed to quit Chrome (it crashed).

I reproduced it in the attached video:

• Go to classic.minecraft.net

• Zoom in by using CTRL+(Plus key) or CTRL+Scroll wheel (While its loading)

• Go fullscreen                                                                      (While its loading)

• Zoom out again by CTRL+(Minus key) or scroll                (While its loading)

• Chrome and the operating system lags

This is on a Windows 7 Home Premium with Chrome version 90.0.4430.93 (Official build) (64-bit)

Flexan