alt Hacker NewsIt was adequate for CLI/terminal/console usage, i.e. there was no issue between iPad and the capture card, any limitations were intrinsic to the card itself and would be the same on a PC laptop with Windows/Linux.
Non-Pro iPads are limited to USB2 speeds. Capturing 4K content for display on iPad would need a Pro device with USB3/Thunderbolt USB-c input.
Maybe it's my eyes, but I really like having a high res display for terminal or anything else where I'm reading a lot of text. It can be low framerate or high input delay, though.
1080p on a small screen isn't bad, though.