[Q]How to fake tegra k1 using gltools??

Im using a Tab S 10.5, and i badly want to play games (NFS No Limits) in maximum graphics! But in gltools, there is no option for faking the Tegra k1, and all the other GPU names are not of any latest ones. Is there any way to fake the tegra k1? Or is there any other way to play games with maximum graphics? Please help me! Any help is extremely appreciated! :)

Rooting Tegra Note 7 on 5.1 Lollipop

This is a complete noob on rooting and unlocking bootloaders talking right now, so could someone help me or link me to any place with detailed steps on how to do it on 5.1 TN7? I haven't rooted any device at all yet and I wouldn't have even thought of doing it if it wasn't for the random lags and general heating issues/battery drain my tab is suffering after updating to lollipop. This tab is kinda like my device to experiment with games and apps that I normally wouldn't use on my phone so since the warranty already got over a few months back, I thought now would be a good time to step into the vast rooting waters. There are multiple articles on how to root TN7 but most of them are for KK and before. I can't seem to find any recent ones with detailed steps for 5.1.