UE4 + Quest : FPS drop when running a release version of the app for the second time
The first time a shipping version of the app is launched, everything runs fine and we're hitting 72fps on the Oculus Quest. However, immediately after a restart of the app, there's always a consistent drop in framerate (~10fps lost) This seems to happen only when we create a release version for distribution, and not when we build a regular shipping build. Has anyone else noticed this happening ? FYI we're running the Oculus branch of Unreal Engine 4.22.1 Quest build settings for Arm64+ES3.1
(Android) Unity got Poor CPU Performance compared with Native apk
Hello everyone, my team have been contributing to develop " view dependent media player ", which using a single thread decode 2048 * 1536 with android-media-codec (we can call it BASE TEX) and four thread decode 512 * 256 * 24 split blocks for viewer directly look at with ffmpeg (we can call it HD TEX), very similar with VR_5K_PLAYER. The above main framework make the cpu usage more heavy compare with gpu. Cpu need decode 2048 *1536 totally and upload YUV from memory to video memory every frame, while gpu only decode 2048 *1536. After a few test with Samsung S8 & Quest, i found that, s8 & Quest got different performance which s8 got a high fps because of Quest has less cpu avaliability compare with S8. ( PS: S8 & Quest all equiped with snapdragon 835. as far as i know, the 835 chip contain 8 core, 4 core of all 8 core are big core responsible for heavy work ) To confirm my point of view , i made a test proj using unity & the latest gear sdk, add heavy cpu work for some thread public class NewBehaviourScript : MonoBehaviour { // Use this for initialization void Start () { for (int i = 0; i < 8; i++) { ThreadStart method = () => threadWork(); Thread thread = new Thread(method); thread.Start(); } void Update() { long sum = 0; for (int i = 0; i < 1000000; ++i) sum = (int)((sum + i) * 2.0f / 2.0f); } void threadWork() { while (true) { long sum = 0; for (int i = 0; i < 100000000; ++i) sum = (int)((sum + i) * 2.0f / 2.0f); Debug.LogFormat("TestThread End name:{0} curr thread id:{1} cur timeStamp:{2}", sum, Thread.CurrentThread.ManagedThreadId, DateTime.Now.ToString()); } } } the enclosed python file use "adb shell cat /proc/stat" to calculate 8 core usage. the above result is S8, the last four core are big core usage, while 3 big core execute full load. the above result is Quest, the last four core are big core usage, while 2 big core execute full load. my team also made a native android project which using gradle & android studio & without gear, loading my dynamic library through jni & execute view dependent media player. the S8 cpu usage is the below result is executed with S8 using unity & gear & same dynamic library, the two test show that native apk get a better & average cpu usage while heavy cpu work executing, compared with unity & gear apk. My question is, Is there a way for unity & gear apk to control device cpu availability rate ? why native apk performance diff with unity & gear apk? why Quest got less core to execute cpu work compared with S8?
Option To Disable Oculus Dash
I'm sure this has been posted many times before, but that's part of why I'm posting this as well. I want the developers to hear this as much as possible. Many users, myself included, have had a lot of performance issues since the release of Core 2.0 due to the Oculus Dash. I can personally confirm that the Dash process consistently uses 25 to 30% of my CPU. Processing time that I desperately need back for my games to perform like they used to. Please, Devs. Give us an option to disable the Dash feature. I barely use it, and it severally impacts my ability to play my favorite games. I know a lot of users enjoy it, so I'm not asking you guys to get rid of it completely. Just please give us a way to turn it off, for the players who's PCs aren't quite up to handling that extra CPU load.
Timewarp not working?
Something happened within the last month or so that has brought some serious jutter with it. When I load up my game, it's ok for the first few seconds, nice and smooth, then suddenly, it's as if timewarp is turned off. When I move my head I see a double image, like a 1 frame motion blur. I thought maybe it was something I added to the game effecting performance, so I loaded up an old build that I know ran smoothly. Still bad. Tried opting out of beta and Rift Core 2. got an update to firmware and software. Still bad. I can only assume that something has happened with both versions of Home? It's not just my game either.. I've loaded up some other things and I get the same issue. Most recently was The Wave. My rig is an i7-4960x, GTX 980. Been running everything like a dream (as I said, up until recently) I've heard a few other developers complain about this same issue. I'm at a loss now. Is this a known issue with a recent driver or firmware update? Let me know. Cheers
