Join GitHub today
GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together.
Sign upVeggieseasons sample drops frames while scrolling #297
Comments
|
I've done some more testing and it's probably obvious but, disabling the blur |
|
The scrolling was smooth in 1.5.x and has since regressed. As noted in the other issue, I've tested this with the |
|
Video with performance overlay of the two versions: Screencast v.1.7.8+hotfix.4 (youtube) |
|
CC: @HansMuller Clearly we needed our own issue tracker for the samples for a while now. I don't have an iOS hardware device on me today, but I'll try to verify if this problem still exists with the current SDK early next week. |
I noticed that the veggieseasons sample app drops below 60fps while scrolling through the veggies on the home screen.
I get an average of around 20ms/frame GPU time and max GPU time of around 30 ms/frame.
So it only runs about 50fps, which seems like a small deviation but on a fixed refresh display it leads to micro stuttering.
Test Setup:
Flutter 1.7.4 release build.
I turned on the performance overlay by adding to
showPerformanceOverlay: trueto theCupertinoAppwidget.I testest both on a Galaxy S8 with Android 9.0
and a iPad 6th generation running iOS 12.3.1
Both had similar frame times.
I know that these are not fastest devices but it is just a simple list after all and I would expect scrolling to be smooth.