`SpawnEntityOnDeath` Only creates local entities, it's meant for say debris, or an explosion decal. https://gitea.wildfiregames.com/0ad/0ad/src/commit/32edc28cda72d0c9cd70937d7c46c58322bcf040/binaries/data/mods/public/simulation/components/Health.js#L403

Short answer: it depends. On lower end machines, graphics are gonna eat up your GPU causing your CPU to starve. So for those, graphics and model quality will be the bottleneck. Getting the state for unit selection is quite slow as it pulls a lot of data (https://code.wildfiregames.com/D1618). Querying interfaces, (e.g getting a component for an entity) might be faster with better data structures https://code.wildfiregames.com/D1739 / https://code.wildfiregames.com/D4718 Creating entities is a bit slow too IIRC. E.g our upgrade system could use not having to create and destroy entities https://code.wildfiregames.com/D4991 Other hints in patches by wraitii https://code.wildfiregames.com/search/query/1SOtiSQV9ik8/#R This looks interesting https://gitea.wildfiregames.com/0ad/0ad/pulls/8521 OUTDATED but maybe still interesting https://gitea.wildfiregames.com/0ad/0ad/wiki/GamePerformance EDIT: also https://gitea.wildfiregames.com/0ad/0ad/issues/5874 which has a weird title cc @phosit

Could be a recent update to Gitea cc @Itms   

You might try to make a weathered version of the boat texture to make it look like it's been there a little while.

Looks really cool! Maybe the stone wall could use a few more details to look less blocky but otherwise good job.