Import Workflow for weaker computers (6th gen or less CPU, 4 or less GB VRAM, 16 or less GB RAM):
Transcode or create Proxies on Ingest: create proxies or transcode on ingest for any H.264, HEVC footage that is 4K or greater. These files are easier to edit with. See also thisarticle.
Do not use H.264 for proxies or transcodes. That codec is not very performant.
Kevin Monahan - Sr. Community & Engagement Strategist – Pro Video and Audio