Same problem with new MacBookPro 2019 16". A fully stacked power machine with 8 cores, 64 GB RAM, external GPU and it lags as hell when the monitor is rotated 270 degrees. I am using a DELL 6000 Universal dock with the latest firmware . The MacBook is fully patched and has the latest DisplayLink driver.

Please!! fix this issue asap. It is not so unconventional that people rotate their screens, especially in the professional environment. I guess that most people will not immediately identify DisplayLink as the issue. Please! Thank you.

why is this not tracked as a bug?

Not fixed in 5.2.1 22 (Nov 2019) : (

Also having this same problem (MacBook Pro 2018 w/ two Dell UltraSharp U2715H's). Incredibly annoying!

I also use the screen in vertical position and every time I turn the visualization to 90° it becomes very laggy.

Having this problem also with a monitor that needs to be rotated 180 degrees to fit properly on my VESA mount. Runs nice and smooth until I rotate the display in system preferences, then any interaction on screen becomes laggy. Completely unusable! Hopefully this can be fixed or I'll have to return the hub.

Any progress on this please DisplayLink?

Confirming that this is still a problem in November 2019. It's quite frustrating. People with multiple monitors often rotate one; this shouldn't be an untested edge case.

I emailed the guys about this and pointed to this thread; They replied with this lie:

> I've been looking into this and you can expect performance improvements in the next release of our driver.
>The driver will be available when Catalina is rolled out.

Yea installed latest version and saw 0% improvements. Again confirming they don't care and willing to lie to customer about this issue.

And I assume the 5.2.x beta out now for Catalina doesn't fix this? Of course it doesn't. Man... you'd think companies would actually want their products to be usable. The lag on the rotated monitor is just beyond annoying. It slows me down at work. It's nearly unusable, barely tolerable at all.

As others have said, how is this still an issue in 2019?

MacBook Pro 2019 and Startech docking, the issue is also observed

Same for me.

No answers after 3 years, do you really care about client inputs ?

Can someone tell me how is this still an issue? 3 YEARS? DisplayLink is a joke, an absolute joke of a company, if you own one of the hubs, RETURN IT immediately. Dont give these guys your money, they dont care about you and you should not care about them, just get a few cables and get over it, no point of a hub that can't be used a hub, or just partly used a hub.

Having the same issue. This is ridiculous, going to return this piece of crap.

Having the same problem using Targus dual 4k dock and thunderbolt 3. Rotated my monitors 180 degrees and crazy lag.

Same issue here with MacBook Pro 2019 and two Dell P2419H (Dell D3100 docking station), the rotated screen is unusable. That's the main feature of a docking station using this kind of drivers: using multiple monitors with non standard configurations.
Please work on this and ask us for help with beta testing it.

issue still going on
very low framerate when using a 90 degrees rotation on macOS
way smoother in landscape mode

Having the same problem with my MacBook Pro 2019 plugged into a Dell D6000 dock. When my external screen is rotated the framerate drops to 5 or 10 fps. This is important to me - I hope this can be fixed!

Any word on this? Rotated screens are too laggy to be usable.