HwKeeper
Over the past couple of days I've been optimizing the new engine and server, and in the end I managed to achieve quite good results.
To evaluate performance, I used the benchmark from PageSpeed Insights (mobile and desktop), using the standard "Heroic" theme by default — on the classic one it should be even better.
Both domains were evaluated: heroesworld.net and heroesworld.ru (besides the content language, they also differ in that .net works through CloudFlare, which provides additional caching and bot protection, while .ru works directly, since CloudFlare is partially blocked in Russia)
The mobile PageSpeed Insights performance score increased from 67 to 92-93
The desktop PageSpeed Insights performance score increased from 94 to 99-100
The other scores such as Accessibility, Best Practices, SEO, and the benchmark were also rated at 100 points.
Thus, technically the server operates very optimally and efficiently, meeting all modern practices and standards.
If the site is slow, it's most likely due to your internet connection to the server.
In terms of availability, an additional test was also conducted via ping-admin.com
https://ping-admin.com/free_test/result/17888090494bpr6hr2e64j70civ4442.html
The result showed availability from 187 locations (out of 190 total) around the world.