Thanks from me too! It seems to work ok
Any update on this situation? I too am experiencing this problem, but itās not solved by changing the gradient background to a solid one. Although it seems to be the same issue nonetheless.
Iām on the latest Dorico (this issue has been happening on and off ever since Dorico came out if I remember correctly), Iām on a Macbook Pro M1 (pro), working on an external monitor.
Dorico is the only app in which this happens, and the flickering is contained to Doricoās window only. Other apps I run alongside Dorico when the flickering happens are not affected.
What works is restarting Dorico, but thatās quite annoying to in the middle of working on something, as it happens quite often.
Itās extremely tiring to the eyes, especially when working late at night.
Dorico Diagnostics.zip (2.0 MB)
Hi All
Me too! Sorry - all everything SEMH said above.
I am a recent convert to Apple having been a Windows user since its outset, and now running a Macbook Pro M4 Max, Sequoia 15.2, Dorico 5 pro, and an external 4k monitor + laptop screen.
I work mainly on large orchestral and choral projects, and the changeover to Mac has been like night and day in terms of performance. Instead of 30+ seconds to save a project and continue, it is now about 1s. All brilliant except for this annoying flicker - around the edge and in between pages.
As suggested by Daniel, rebooting Dorico does cure the annoyance, but I like to keep Dorico open for long periods and having to reboot is an unwelcome interruption.
Otherwise, really happy with my set up.
Pete
Iām finding this flicker awful. It happens on MIDI note input and playback. I have 3 monitors (2 Samsungs and a Dell Ultrasharp) running off a Mac mini M2 and they all flicker so it doesnāt seem likely to be a monitor problem. Iāve also tried using different audio interfaces and it happens with all of them. It doesnāt happen with any other app. Iāve recently come over from Finale and Iām trying to come to terms with Dorico but this flicker is likely to send me in a different direction.
I have an M2 Mini with 2 displays attached, and I havenāt observed any problem, so there must be some other factor at play.
Have you changed the background to a single colour, rather than a gradient?
Trying that now.
I think thatās fixed it, thank you. Stupidly d been looking on the monitors and the Mac system software for the gradient option - feeling a bit silly nowā¦! Thanks again.
I spoke too soon! I thought that switching from Gradient to Single Colour would do the trick but it seems to be just as bad. Itās sort-of unusable as it stands. May have to go back to Finale for the moment
Example here: https://youtu.be/X_UrcqChIH4?si=ofPsqw-HJ3BJzABh
Does this also happen when you got 1 display attached? Could it be a faulty cable?
Iām on an M2 pro, I believe, with two external monitors. (Was a few years on an m1 mini before that) and have never had the flickering, even though I often use Dorico for hours a day. Iām in light mode, Default blue background gradient,FWIW.
What Refresh rate frequency are they set to?
The Dell (the one I mainly use for Dorico as itās in the centre) is 120H. The Samsungs refresh at different max rates - probably because of the available outputs I have on the Mac). 1 is at 60H and the other at 30H.
Can you test other ratesā¦? Iām just pulling straws to suggest something that might account for the difference on your setup.
I have a Samsung display at 75Hz, and an Apple Display at 60 Hz, and I donāt see the flickering in your video.
Perhaps you could test a brand new user account? (Though Iām not sure how Steinberg licensing handles other user accounts.) But thatās the standard test to pinpoint whether problems have their cause at the āsystemā level, or whether itās a user configuration.
Yeah. I thought I might phone Steinberg support tomorrow to see what they suggest?
Iāll try that.
Iād try putting them all at 60Hz 
there might be a limitation with the daisy chaining of displays with the thunderbolt (4?) cablesā¦
TBH, I doubt youāll get better help with Dorico from general Steinberg support than through here.
At the moment, itās a problem whose cause is unknown.
Yes I imagined that might be the case. This forum is great.
I made a bit of progress less late last night. I experimented with connections and it looks as though one dodgy cable mightāve been affecting everything else. I swapped it out now and things seem to be better. Iāll report back when Iāve had time to thoroughly test it. Thanks for your help. Fingers crossedā¦
Thanks to everyone who responded to my query. Having worked with the new cable for a couple of days I now only occasionally get the flicker and a restart seems to clear it. Perhaps I need to replace all my cables - but itās odd that it only happens with Dorico! I also upgraded to Dorico 6 in the hope that it might help - I suppose at the very least this confirms my commitment to Dorico going forward!