UI elements are laggy and animate at only 60 fps on 144 Hz monitor.

[kathampy]

kathampy last edited by

I'm using Opera 43 on Windows 10. I have a 144 Hz monitor and Opera's UI feels unresponsive compared to other native Windows applications. There is a small but noticeable delay of maybe 10 or 15 milliseconds before any UI event. All of the below actions feel unresponsive:

• Clicking a tab
• Clicking the + to open a new tab
• The new tab expanding animation stutters at at low framerate (60 fps is substandard and judders to me since I'm used to 144 fps)
• Opening the Menu and hovering the mouse over the menu items has (the blue mouse-over highlight lags behind the 144 fps mouse cursor and skips items completely if moving fast enough)
• Clicking anything in the Navigation Menu such as Bookmarks, History, Settings, etc. has a delay before it opens
• Scrolling in the Settings tab is sluggish because there is a delay between when it starts scrolling and physically moving the scroll wheel (actual web pages do not have this delay)

[zalex108]

zalex108 last edited by admin

Kathampy

This was the first post I made that had to be approved by a moderator before it appeared. I'm unable to edit it to reformat it properly. I am able to edit subsequent posts.
https://forums.opera.com/topic/19574/ui-elements-are-laggy-and-animate-at-only-60-fps-on-144-hz-monitor/1

Sgunhouse

Better?

Despite I don't know the answer, the only mistake it's between FPS and Hz?
It is right¿?

"You cannot know the meaning of your life until you are connected to the power that created you". · Shri Mataji Nirmala Devi

[alobpreis]

alobpreis last edited by

Just to confirm: if you lower the refresh rate to 60hz, all those issues are gone? Can you see if at 72hz, 85hz, etc. the issues exist?

[kathampy]

kathampy last edited by

Just to confirm: if you lower the refresh rate to 60hz, all those issues are gone? Can you see if at 72hz, 85hz, etc. the issues exist?

If I lower the refresh rate to 60 Hz, then the whole Windows desktop becomes just as "slow" - the issue is just masked. There must be some internal timer in Opera's UI framework that limits it to updating at 60 fps.

I noticed that Opera Developer with the new UI is much smoother and doesn't seem to be capped at 60 fps. Nevertheless it's probably a good idea to check that there are no artificial caps in the framework.

[abusivefather]

abusivefather last edited by

have you check about:flags ?

[kathampy]

kathampy last edited by

have you check about:flags ?

There is nothing there that seems to affect the UI frame rate.