There's not much I can do to lower the graphics quality, but that's not the cause of most lag. The exe version is a lot faster than the HTML5 version though - you can download it here: https://fancyfishgames.itch.io/aground
i did a DK reset and there seems do be a discrepancy between the gold from countries per sec listing and the actual gold the country says it gives per cycle. Astrila says it gives me $153,932 per cycle, which takes approx. 8 seconds, which adds up to $19,241.50 per sec. When i have that as the only country ive conquered the gold per second from countries value lists $12,827.67, which is one twelvth the full value of a cycle instead of one eighth.
There's not much I can do to lower the graphics quality, but that's not the cause of most lag. The exe version is a lot faster than the HTML5 version though - you can download it here: https://fancyfishgames.itch.io/aground