# FrameSkip-adapted (+500)

This directory reproduces the Florence-Bridge FrameSkip comparison used by this
release. It starts from the same complete 20K state as the OPTR arms and runs 500
additional optimizer updates with the same two-GPU global-batch-64 contract.

The scorer uses the official FrameSkip implementation vendored under
`third_party/frameskip/` at upstream commit
`965becf63e9cd5cc339fbf7fde40d1db47efa67a`. Bridge does not have a released GMM
TPI cache, so this comparison is named **FrameSkip-adapted (Gaussian-TPI
fallback)**. The fixed settings are retention ratio 0.2, AVI/VAC/TPI weights
0.6/0.2/0.2, VAC enabled, first/last and gripper-transition preservation,
top-10% action-change preservation, and five pruned microbatches followed by one
full microbatch. No p/q correction is applied because FrameSkip remaps physical
timesteps rather than sampling from OPTR's q(t|e).

Prepare DINOv2-S/14 separately, build the required-draw list and cache with
`build_required_draws.py`, `build_cache_shard.py`, and `finalize_cache.py`, then:

```bash
scripts/run_frameskip_plus500.sh frameskip-plus500 /path/to/frameskip-cache.json
```

The cache and visual weights are runtime assets and are intentionally not stored
in Git. Evaluation uses the same `scripts/evaluate_bridge_384_no_video.sh` entry
as Uniform, Matched-Random, and Residual-OPTR.