Can I use Apple TV 4K on a 2k monitor?
I currently have a 2k monitor.
Will Netflix, Disney+, YouTube, Apple TV work on 2k or will it work on 1080p only because Amazon 4K fire stick does not support 2k and very laggy.
2k or 1080p.
That is the same for 16:9 TVs.
1080p is almost 2000 pixels wide: 1920×1080. [4K is almost 4000 pixels wide: 3840×2160.]
Apple TV 4K supports multiple common TV resolutions, from SD to HD to 4K.
Monitors may have other resolutions, and aspect ratios other than 16:9. Then compatibility depends on the monitor’s internal scaling capability.