So finished the Roms so far and made it avaible for download at Androidfilehost serach for:
AospExtended-v4.6-shieldtablet (All working)
AospExtended-v5.8-shieldtablet (Camera brocken and HW accleration OMX Fixed works now)
Thanks to BitOBSessiOns and Artemka2008 for the Kernel sources from Rel24.1 /24.2.
and Steel01 for all the fixes he do for the Shieldtablet.
Added IO Schedulers:Zen,Sio,Maple
Removed:SDCardFS and F2fs causes Bootloop/Data Corruption
Other Stuff: Zram with Lz4 Compress Cleancache/Front
swap SMT/MC Optimized
Modified Dtb for faster charging (Tested around 2.4A at 5 Volt Chargepower with Anker 20W Wallcharger and 2A at 9V with Anker Power Port+1) experimental QC2.0 enabled Tests needed
After Magisk Root and for correct working QC2.0 please flash my DTB you found on Androidfilehost
fastboot flash dtb tegra124-tn8-p1761-1270-a04-e-battery.dtb
For the first time better control Backside of your Tablet when charging or use Ampere app to see the Battery Temp
PLATFORM_SECURITY_PATCH := 2020-02-05