Ah in that case, I’ve never had a problem with the OWC line of docks: https://eshop.macsales.com/shop/owc-thunderbolt-dock

They’re good across PC & Mac and have a solid return policy. They’ve also got newer models with more ports / capabilities, but that one has been working for the last couple of years.

The HP G5 dock (used) is also super reliable — HP USB-C G5 Essential Dock 72C71AA#ABA (Renewed) https://a.co/d/8SiyLxX

My spouse uses it with her dual 4K setup and it seems solid, but I haven’t gamed with it. No visible lag when doing “normal” things.

(EDIT: I realize you asked for Linux-compatible — these do work with my steam deck and other devices.)

Might be an issue with your X280 to Dock bandwidth. What cable are you using for the connection and does the X280 support the 10-, 20-, whatever-gigabits-per-second the dock expects? Not sure how to test the link rate, but I’d start looking there.

Myopic decision-making is a standard human fault. The problem is that some Deciders have wildly disproportionate effects on everyone else. (i.e. leadership roles across business and government)

We can’t fix individual ignorance and prejudice to a level that will resolve the issue, so maybe we need to invest our efforts in forcibly distributing power to make sure one person (or a small group) can’t unilaterally ruin thousands or millions of lives.