Minimax H3 Latent Upscaler slows to 1000+ seconds per step when queueing jobs

WhiteKnight225 · reddit · 2026-08-27

A Reddit user testing the Minimax H3 latent upscaler reports that the first generation runs normally, with each of the upscaler's 3 steps taking roughly 60–180 seconds. From the second queued generation onward, however, the upscaler initialization and each step balloon to 1000+ seconds. The poster is asking whether others hit the same issue and whether a fix or setting exists — likely a resource-release problem under multi-job queuing, but no conclusion yet.

Related event: Minimax H3 Latent Upscaler Slows Sharply in Queued Generation(2 posts)→

Original post →

More from Multimodal

Multimodal channel →