#LAGGY 4K MONITOR MAC OS UPGRADE#
#LAGGY 4K MONITOR MAC OS PRO#
#LAGGY 4K MONITOR MAC OS CODE#

But all else is not equal, which means that while 30 frames per second is more bothersome to some than others, we all tolerate it.

All of my colleagues and I would prefer displays with 60 frames per second or better, all else being equal. Let me be clear: 30 frames per second sucks. Still, with so few frames per second, routine computer user interface mechanics such as aiming with a mouse pointer or scrolling a window can be choppy and frustrating. The screen is not going dark between frames. 30 frame updates are sent to the monitor per second, but there is no flicker. It's important to understand that 30Hz on an LCD is nothing like 30Hz from a strobe light or a CRT. But at the maximum resolution of 3840x2160-the resolution you are going to use if you connect this television to your computer-HDMI 1.4 limits refreshes to 30 per second ('30Hz'). The box prominently says '120Hz,' which is in fact available at low resolutions. The marketing material for the Seiki television is a bit confusing. The principal weakness of today's 4K displays is the use of HDMI 1.4, which is limited to 30 frames per second at 3840x2160. But instead of waiting, we're happy to have huge displays right now.Р”Р„s for weaknesses, two months have confirmed some that were known and uncovered some others. With luck, superior displays will hit the market this year.

#LAGGY 4K MONITOR MAC OS UPGRADE#

The price is simply too low and our need for an upgrade was too high to hesitate. We'd buy them today had we not already bought them in January. I was told that multiple internets (is Internet2 still a thing?) would enjoy a follow-up to my earlier post. Still, the cost-benefit analysis is all too simple: the cost is low, and the benefit is high, despite the failings. We should not suffer these failings we should not be beta-testers for a clueless industry.

These limitations are not a matter of technology, making them acutely frustrating to an informed buyer. There are serious weaknesses with the current batch of 4K displays, from the still-not-available HDMI 2 specification, to shortsighted design and marketing decisions such as targeting the living room first. 4K is for programmers, not couch potatoes. Some of us took the 4K televisions home and installed them in our living rooms, where 4K rightfully belongs. So we returned our Seiki 4K televisions and switched back to our trusty 19-inch ViewSonic monitors. All of those pixels do not compensate for mousing at 30 frames per second and it doesn't matter if you have millions of pixels if the colors are all wrong. It seems with Xcode 10 and over everything gets redrawn because of one single AnimatedSprite.Р”В«ut even with Xcode 9 the CPU usage is WAY TO HIGH, but at least 'potentially usable'.Today's cheap 4K displays are not up to snuff. You can build with Xcode 9 (10.13 SDK) to opt out of layer-backing, in which case the threaded render loop is available and used by default.' 'On macOS, the threaded render loop is not supported when building with XCode 10 (10.14 SDK) or later, since this opts in to layer-backed views on macOS 10.14. We get CPU usages of 20-30% because of one single AnimatedSprite in GUI. Now imagine what happens on complex application with many QML elements.

#LAGGY 4K MONITOR MAC OS CODE#

On Windows same code uses something as 0.2% CPU. We made an example project to test it out and simple QML code with two AnimatesSprites (project attached) is using on Mac 12% CPU on startup and then after 20-30s it settles on 5-7% CPU. It is much better when compiling with Xcode 9.4.1, but still takes 10x the CPU of the same code on Windows machine. What changes behaviour is using Xcode 9.4.1 vs. We have observed that the issue is the same using QT 5.12 or 5.14. QT elements as Menus open really laggy/jumpy etc. Even a simple 1 icon AnimatedSprite in application would not be smooth.

#LAGGY 4K MONITOR MAC OS PRO#

We have noticed considerable slowness of QML based application on MacBook Pro 13' 2016 (3,3 GHz Intel Core i7), Intel Iris Graphics 550 1536 MB graphics, OS X 10.14 when the app is running on external 4K monitor with scaling enabled.

Laggy 4k monitor mac os