I play on this laptop Civ V (minimal requirements [1]) on this laptop, but can't a single web-widget? This is tragic quality.
Constructive or not, looks like author didnt test it on every browser on a lower-performance hardware like 10year old CPU, eg. maybe i3. If I use this widget in my development and we give a product with this widget to customer who runs IE11 or EDGE on i3 from 2012, it will be my problem to fix it. I will complain to the developer, we all waste time and resources.
If developer of a thing wants to show us something they're proud of. Test it, benchmark it, show it. Never let us, users benchmark and test your stuff, you will get blacklisted for that poor quality and performance software quickly.
[1] https://support.2k.com/hc/en-us/articles/201332873-Civilizat...