Tomb Raider Anniversary

[thund3r]

Hi guys!
I'm new to emulator, but I expected better performance on my new tablet Samsung Galaxy Tab S3:
OS: Android 7.0 (Nougat)
Chipset: Qualcomm MSM8996 Snapdragon 820
CPU: Quad-core (2x2.15 GHz Kryo & 2x1.6 GHz Kryo), 4 GB RAM
GPU: Adreno 530
I've tried plaing Tomb Raider with all suggested settings from this post (http://forums.ppsspp.org/showthread.php?tid=5236) but couldn't get more than 20 fps (it's usually 10-15, 6 at x2 psp resolution)! I experience sound issues as well. I don't know if the problem is in my device, in the app or the game istelf - does the game count as playable on android?
I have same issues with Pronce of Persia: Revelations......
Please help!