Measure how a pack runs on your PC, and set it up with its author's preset in one click (and undo it just as easily).

Measure on my PC (instance detail → Performance): a fixed scene, 90 s measured, the result at once and offline — average, 1 % low, a frame-time graph, memory, load times and a sentence saying what ran out first (graphics, processor, or the 250 FPS cap). The scene for Minecraft 26.x is not finished yet — the test comes there soon.
Sending is a second, voluntary step: consent once, you see exactly what is sent, under your STYGION ID or anonymously; Settings → Benchmark deletes runs on your PC and withdraws sent ones, unlinked from your account (then they count nowhere).
Estimates in Discover: a chip on a pack card, “~70 FPS · 6 GB” with confidence dots, and a range for your PC on the detail page. Too little data reads “few data”, never zero. Before the first Play on a pack nobody has measured on a PC like yours the launcher asks once whether to measure it (can be turned off).
Passive measurement (off, with consent only): one 5-minute window per session.

A pack's presets: the author ships them (config/stygion/presets/); instance detail → Presets shows what would change (keys, memory, files, mods) and applies one in a click. Everything touched is backed up, Undo puts back what you have not changed since. Keys are set only if you ask.
Mods in a preset only from CurseForge and Modrinth by id, the hash checked against the portal, a warning across the whole dialog that it is code that runs; conflicts (Sodium × OptiFine, …) and required dependencies are checked.
Recommended for your PC from runs on similar PCs; without data there is no button.
Potato Mode is a built-in preset (preview, backup, Undo like the others).

STYGION Launcher s0.11.0: co je nového