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by layer8 1568 days ago
It’s a Thunderbolt limitation at 5K.

https://www.datapro.net/techinfo/thunderbolt_info.html#q26
1 comments
o_m 1568 days ago
The limit is ~90hz, and they already have tech for pro motion (variable refresh rate) in macOS.
link
layer8 1568 days ago
The video part of Thunderbolt 4 is based on DisplayPort 1.4, which is limited to 60Hz for 5K.
link