# Mobile Performance Issues on IOS Device

**URL:** <https://forums.unrealengine.com/t/mobile-performance-issues-on-ios-device/369564>\
**Category:** Mobile\
**Tags:** Mobile, unreal-engine, Performance, bug-report, UE4, question\
**Created:** [September 6, 2016, 1:45pm UTC](https://forums.unrealengine.com/t/mobile-performance-issues-on-ios-device/369564 "2016-09-06T13:45:37Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![anonymous\_user\_93658b41](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_93658b41](https://forums.unrealengine.com/u/anonymous_user_93658b41)\
**Post date:** [September 6, 2016, 1:45pm UTC](https://forums.unrealengine.com/t/mobile-performance-issues-on-ios-device/369564/1 "2016-09-06T13:45:37Z")

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I’m experiencing some hiccups while playing, I tried numerous of things but no luck the hiccups still occurs.

Things I tried :

- In Materials, on Mobile tab i disable use lightmap direction and enable Fully Rough and High Quality Reflection.
- In Garbage Collection i change 60 per sec to 5 min to also 5 10 20 sec but no luck.
- Every texture do not exceed 2048.
- Every texture are in PNG.
- Mobile HDR is disable.

I also tried other configuration witch I don’t remember at the moment.

I’m forgetting something ? Or did I do something wrong ? The hiccups occurs randomly, i do not have anything spawning at the moment also with or without light( Spot Light or a Point Light ) the hiccups still occurs. The map is small and have around 500 ich assets, the hiccups doesn’t occur on a new map.

I’m testing it in a Iphone 6.