ComfyUI SeedVR2 Upscaling Performance Degrades for AMD 7900XTX Users

A recent report from a ComfyUI user highlights a substantial performance degradation when utilizing the SeedVR2 model for video upscaling. The user, operating a Windows desktop system with an AMD 7900XTX GPU and Rocm, observed that video upscaling tasks now take approximately ten times longer than they did a month prior. Specifically, a 30-second 720p clip that previously took about an hour to upscale now requires several hours or even overnight processing.

The user has confirmed that startup flags and configurations remain unchanged, indicating that the issue is not due to altered settings. Attempts to resolve the problem by downgrading ComfyUI to an earlier version were unsuccessful, suggesting the root cause might lie in a more recent update to ComfyUI itself, the SeedVR2 model, or potentially a driver interaction with Rocm on AMD hardware. This isolated report points to a potential optimization regression or a compatibility conflict that specifically impacts high-performance AMD GPUs when running certain AI video workflows within the ComfyUI ecosystem.

For studios leveraging ComfyUI for their video production pipelines, particularly those relying on AMD hardware for cost-effective local processing, this reported slowdown is a critical concern. It underscores the importance of rigorous testing following any software or model updates. Buyers should be aware that performance benchmarks for AI video generation and upscaling can fluctuate, and current hardware capabilities may not always translate to consistent output speeds if underlying software or model optimizations change. This incident emphasizes the need for studios to maintain agile workflows and consider diversified hardware strategies to mitigate potential bottlenecks.