As the title states - I bought an Iphone X and have been playing with 4k videos in Vegas. Unless a proxy is built it is impossible to view the preview windows without hangs and massive stutters. Proxy is ok - the quality is very poor of the preview window obviously, but workable.
System specs are good -
6800k - overclocked to 4.3 - GTX 1080, SSD's for both my internal drives, 32GB ram - so it's not a hardware thing and if I put the content into After Effects to edit, it handles it just fine.
If I'm going to keep working with 4k footage, I'm wondering if it would be better to move to a different platform instead of waiting for super long proxy builds.