PC GPU architecture has special handling for cursors to ensure there is as little latency as possible. GPU's have a special buffer and position register for the cursor.

But for design.google they hijack the cursor rendering and this low latency goes out the window. First it's annoying that my expected cursor is replaced by some weird circle. But then that it's a laggy circle takes the cake. On a design website too. My computer has special optimizations to avoid cursor lag and your website broke them.

And screw low vision users who need a larger cursor to see where it is.

It also means you don't get the I bar when hovering over text making precisely copying text really annoying.

When there is such an immediate design issue with your design website it kinda takes away from the message.