[n42]

my caldigit dock “works perfectly”. it consistently requires plug and unplug, opening laptop lid to unlock then unplugging and waiting and replugging then closing laptop lid, trying different usb-c port, and having to reboot to support higher than 60hz refresh rates. perfectly.

[mshaler]

Exactly my M1 MBA 4K external display experience: "works perfectly."

[grork]

I have heard from friends that the TS3+ is slightly less reliable than the TS3. Initially -- 2017-ish -- we had challenges with the monitors (Dell's) being weird. We updated the firmware on the monitor (no fix), and updated the cables to newer DP cables (Fixed it).

YMMV, of course.

[droopyEyelids]

Dell did not make a thunderbolt monitor in 2017. I'm still not sure if they do. You might be referring to running DisplayPort over USB 3 (with a type-c connector)

USB 3 video is a troublesome way to connect a monitor, with a lot of vendor incompatible techniques for signaling sleep/wake, charging, and obscure limitations on resolution/refresh. For example, for years Dell stated that their USB C monitors were not compatible with Apple devices.

Thunderbolt 3 seems far more reliable, in my experience.

[grork]

Wasn’t implying they were TB; the dock has DP + USB-C (w/ DP alt mode) — those were the monitors connected to the dock (one via DP-DP, one via USB—C-DP cable. The one that ‘fixed’ it was the DP-DP cable)