Low performance in Safari

[queleok]

Describe the bug
There are some quite notable lags in Safari. It seems like it might be somehow related to the shuffle button.

To Reproduce
Steps to reproduce the behavior:

1. Start new game in Safari
2. Click on the shuffle button several times
3. Input words as usual using hw keyboard
4. Observe lags in both the highlighting and the appearance of letters in the input

Desktop (please complete the following information):

• OS: macOS Big Sur
• Browser: Safari
• Arch: ARM (M1)

[queleok]

Haven't observed it before the last refactoring & restyling, hence I suspect a regression