3 ms·
My memory is hazy on this but I did come across an explanation for this behaviour. At mismatched resolutions or fractional scaling (and mismatched resolutions a
by inapis 6y ago
My memory is hazy on this but I did come across an explanation for this behaviour. At mismatched resolutions or fractional scaling (and mismatched resolutions are effectively fractional scaling) macOS renders the entire display to a virtual canvas first. This effectively requires the dGPU.
Your best bet is to run external displays at the MBPs resolutions and because that is not possible/ideal you are left with choices of running at 1080p/4k/5k. macOS no longer renders crisp on 1080p so 3840x2160 is the last remaining widely available and affordable choice while 5K is still very expensive.
- DaiPlusPlus 6y agoHardly anyone makes 5K displays - I have a pair of HP Z27q monitors made in late 2015 that are fantastic, but I had to get them used off eBay because HP and Dell both discontinued their 5K line (Dell did replace it with an 8K, but that was way out of my budget). Part of the reason for 5K’s low popularity was its limited compatibility: they required 2xDP1.2 connections in MST mode. Apple’s single-cable 5K and 6K monitors both depend on Thunderbolt’s support for 2x DP streams to work. I’m not aware of them being PC-compatible monitors at native resolution yet. I love 5K - but given a bandwidth boost I’d prefer 5K @ 120Hz instead of 8K @ 60Hz.