Here is the solution(Requires root)!! This method will trick the game that we're using another CPU & GPU, so it will give us more options!! Most important is, this will only fool the game with fake hardware info, but it won't effect the performance, so the TRUE TEGRA K1 IS UNLEASHED
I'll take Asphalt 8 for an example.
1. Install GLTools
(Paid app, please support the dev!!)Play Store Link
(Free XDA version, has all the functions)XDA Version
2. Open the app, choose TEX(DE)coder, check the boxes and press install.
3. After installing the plugin, the device will reboot automatically.
4. Re-open the app, choose the game you wanted to modify, I'll take Asphalt 8 as an example.
5. Check "Enable custom settings for this app" in General section.
6. Switch to GPU name/emulation section, check both "Use fake GPU info", "Use fake CPU info".
7. Choose "Use a template", here I'll choose Tegra 4, since the chip is also manufactured by Nvidia. Test yourself which one best fits the game!!
8. Profit !!
Hope everyone has a delightful gaming experience!!