Update environment-variables.md

updated envars auto passed on windows rocm installs

Author: NeuralFault

docs/advanced/environment-variables.md

@@ -143,7 +143,15 @@ Most users should leave these alone unless they are troubleshooting a specific R
 | `COMFYUI_ENABLE_MIOPEN` | `1` | Tells ComfyUI to keep the MIOpen-backed path enabled on ROCm builds where it may otherwise be disabled by default. Without this enabled, ComfyUI disables the `cudnn` backend path in its backend calls for RDNA 3, RDNA 4, and newer AMD GPUs, which in turn disables the MIOpen-backed functions that rely on that path. This variable is needed for MIOpen to function properly in those setups. |
 | `TORCH_ROCM_AOTRITON_ENABLE_EXPERIMENTAL` | `1` | Enables the experimental ROCm AOTriton path in compatible PyTorch builds. In Stability Matrix's Windows ROCm ComfyUI integration, this is used for TheRock technical-preview PyTorch builds to enable AOTriton-provided built-in Flash Attention and PyTorch SDPA memory-efficient attention paths. |
 
-For some Windows ROCm-based ComfyUI launches, Stability Matrix already applies several of these optimizations automatically in package code, including `MIOPEN_FIND_MODE=2`, `TORCH_ROCM_AOTRITON_ENABLE_EXPERIMENTAL=1`, `PYTORCH_TUNABLEOP_ENABLED=1`, and `COMFYUI_ENABLE_MIOPEN=1`. Linux installs do not currently get the same automatic overrides, so they will need to be enabled by the user.
+For some Windows ROCm-based ComfyUI launches, Stability Matrix already applies several of these optimizations automatically in package code, including:
+
+`MIOPEN_FIND_MODE=2`
+`MIOPEN_SEARCH_CUTOFF=2` `TORCH_ROCM_AOTRITON_ENABLE_EXPERIMENTAL=1` (RDNA3 and newer only) 
+`FLASH_ATTENTION_TRITON_AMD_ENABLE=TRUE` `COMFYUI_ENABLE_MIOPEN=1`
+`PYTORCH_ALLOC_CONF=max_split_size_mb:512,garbage_collection_threshold:0.8`
+
+
+Linux installs do not currently get the same automatic overrides, so they will need to be enabled by the user.
 
 For a broader reference, see the [official ROCm environment variable documentation](https://rocm.docs.amd.com/en/latest/reference/env-variables.html) and the [official MIOpen environment variable documentation](https://rocm.docs.amd.com/projects/MIOpen/en/latest/reference/env_variables.html).