Local Ai
What are you guys using to train LTX 2.3 loras locally on 4090s?
Users training LTX-2.3 LoRAs on RTX 4090s typically use the official ltx-trainer tool, though the model officially targets H100 GPUs with lower VRAM setups requiring gradient checkpointing and reduced
Users training LTX-2.3 LoRAs on RTX 4090s typically use the official ltx-trainer tool, though the model officially targets H100 GPUs with lower VRAM setups requiring gradient checkpointing and reduced resolutions. Training time on a 4090 is typically 3-5 hours per LoRA for mid-sized datasets including validation and restarts. For GPUs with less than 80GB memory, low-memory mode with hierarchical offloading should be enabled, with batch size 1 recommended for video training.
Related
- Ostris AI Toolkit has day zero support for training LoRAs on top of Baidu's ERNIE-Image
- IC LoRAs for LTX2 have so much potential - you can train SOTA control video capabilities on potato hardware - 4 examples w/ links below
- OstrisAI-Toolkit Lora --> Anima model.
Source: r/StableDiffusion | 2026-04-21