UE5.1.1/5.2/5.3 Serious Mobile Performance bug! Must be noted right now

2 New updates!

I found something really interesting.

If i cap the fps to 60fps i will get a more stable fps chart and less flaucation in the chart compared to 62fps ( or whatever the default ) is

BUT… There will be a very very short stutter at every 5-6 seconds

So basically capping the fps causes stutters every 5-6 seconds compared to the uncapped fps. But it will give smoother fps/ms chart

the question now is. WHY, Why there is a stutter every 5-6second?

The second update is

If i cap fps to 55 the game thread become stable at 7ms

Vut at no fps cap ( or 62fps which is my phone screen refresh rate ) It jump to 13-14ms

Here is a chart

Here is a gif

cap-uncap

( This has been tried on UE5.3 and UE 5.0.3 and the results are the same )

Please someone from Epic just give us attention at least. It is sad no one even looking at this thread.