After Effects error: Unable to allocate memory for buffer – Render Engine memory allocation failure

The goal is to migrate a small After Effects project to a new environment without interrupting rendering, while preventing the “Unable to allocate memory for buffer” error that halts the render queue.

The project must run with limited RAM allocation, and the team is considering enabling “Render Multiple Frames Simultaneously” to keep the render queue moving.

However, Adobe documentation notes that multiframe rendering can still drop frames under sustained heavy load, creating uncertainty about whether this setting truly guarantees zero‑downtime migration.

Does enabling multiframe rendering eliminate the memory allocation error during migration? Does it guarantee no frame drops under prolonged heavy load? What minimum RAM allocation ensures zero‑downtime migration when multiframe rendering is enabled?