Fix technical_report_fcdm_diffae.md benchmark methodology

technical_report_fcdm_diffae.md

@@ -170,18 +170,30 @@ The fixed 39-image set is exported separately as a reconstruction viewer with
 side-by-side originals, semdisdiffae_p32_v2 reconstructions, error deltas, and
 PCA visualizations. FLUX.2 VAE reconstructions are included for comparison.
 
-## Throughput
-
-Measured on an `NVIDIA GeForce RTX 5090` in `bfloat16`, with `5` warmup batches
-and `20` timed batches. Decode uses the default 1-step sampler with PDG
-disabled.
-
-| Operation | Resolution | Batch Size | Mean (ms/batch) | Median (ms/batch) | P95 (ms/batch) | ms/image | Images/s | Peak Allocated VRAM |
-|---|---:|---:|---:|---:|---:|---:|---:|---:|
-| Encode | `256x256` | `128` | `12.57` | `12.41` | `13.27` | `0.098` | `10186.8` | `574 MiB` |
-| Decode | `256x256` | `128` | `98.93` | `99.22` | `100.16` | `0.773` | `1293.9` | `1042 MiB` |
-| Encode | `512x512` | `32` | `12.08` | `11.98` | `12.46` | `0.377` | `2649.9` | `579 MiB` |
-| Decode | `512x512` | `32` | `100.36` | `99.39` | `105.84` | `3.136` | `318.8` | `1042 MiB` |
+## Encode Throughput
+
+Measured on an `NVIDIA GeForce RTX 5090` in `bfloat16`, averaging `20`
+repeated batched `encode()` calls after `5` warmup batches.
+
+| Resolution | Batch Size | Mean (ms/batch) | Median (ms/batch) | P95 (ms/batch) | ms/image | Images/s | Peak Allocated VRAM |
+|---:|---:|---:|---:|---:|---:|---:|---:|
+| `256x256` | `128` | `12.54` | `12.52` | `12.86` | `0.098` | `10206.3` | `567.8 MiB` |
+| `512x512` | `32` | `12.09` | `12.12` | `12.33` | `0.378` | `2647.2` | `563.8 MiB` |
+
+## Decode Latency
+
+Measured on the same `NVIDIA GeForce RTX 5090` in `bfloat16`. This is
+decode-only latency: `20` images are encoded once per resolution, latents are
+cached, and timing is sequential batch-1 `decode()` over the cached latent set
+with the default 1-step sampler and PDG disabled. This follows the
+`capacitor_decoder` decode benchmark methodology and does not include encode
+time.
+
+| Resolution | Batch Size | Images | Mean (ms/image) | Median (ms/image) | P95 (ms/image) | Images/s | Peak Allocated VRAM |
+|---:|---:|---:|---:|---:|---:|---:|---:|
+| `512x512` | `1` | `20` | `5.11` | `5.10` | `5.27` | `195.6` | `340.8 MiB` |
+| `1024x1024` | `1` | `20` | `10.14` | `10.16` | `10.22` | `98.6` | `409.6 MiB` |
+| `2048x2048` | `1` | `20` | `53.86` | `53.95` | `53.98` | `18.6` | `720.9 MiB` |
 
 ## VP Stability