@de_g0od @Darxide23 Thanks for your review.
That speed's my take on a reasonable speed for openresty servers, coz as much as we're annoyed by the site UI, we love to see itch.io and the community around it lives on.
Yes, unfortunately I've to make the decision to drop support for Greasemonkey coz it uses the GM.(dot) API which is different from GM_(underscore) API supported by both TamperMonkey and Violentmonkey.
The slow bottleneck happens once for each game data fetching, that data is reused afterwards.