And look at this...This looks quite promising. Manual here: https://www.philips.co.uk/c-p/27E3U7903_00/brilliance-5k-monitor/support
Maximum resolution
5120 x 2880 Hz @ 70 Hz
Effective viewing area
596.736 (H) x 335.664 (V) mm
Scanning Frequency
30-210 kHz(H)/60-70 Hz(V)
People have been dissing 5K 27" and 6K 32" displays for having a 60-Hz refresh rate across the board; 70 isn't a big step up, but it's a move in the right direction, at least.