Best LTX 2.3 workflow and ltxmodel for RTX 3090 (24GB VRAM) but limited to 32GB System RAM. GGUF? External Upscale?

Hey everyone. I've been wrestling with LTX 2.3 in ComfyUI for a few days, trying to get the best possible quality without my PC dying in the process. Hoping those with a similar rig can shed some light. ​My Setup: ​GPU: RTX 3090 (24GB VRAM) -> VRAM is plenty. ​System RAM: 32GB -> I think this is my main bottleneck. ​Storage: HDD (mechanical drive). ​🛑 The Problem: I'm trying to generate cinematic shots with heavy dynamic motion (e.g., a dark knight galloping straight at the camera