[OnePlus 7 Pro ROMs, Kernels, Recoveries, & Other D] Arden144:
Here's the feature list for FDE.AI. I'll categorize them into WTF, ?, placebo and meh/good.

To be specific on why I'm calling the final category meh/good instead of just good, it's because while the tweak claims to 'optimize' these things, there's no explanation of what it's actually doing and how it's deciding on the parameters to use. Android devices vary wildly, and there's no viable way it could create better settings than the OEM engineers already did.

WTF:

Board clock gate activatation

Board clock scaling activation

Power-key input boost activation

Fingerprint boost activation

LCD power consumption reduce

Simple GPU mode activation

Disabling Doze settings reset

R/W speed optimization for all partitions

I/O optimization for all partitions

File system optimization for all partitions

Entropy generator optimization

Kernel OOM killer deactivation

Launcher redraw deactivation

Image compression level increase

Project-butter activatation

Tripple-buffering activatation

Kernel panic deactivation

LMK fast run logic deactivation

ALMK deactivation

?:

CPU synchronisations optimization

System services fixes

Patching SafetyNET

SElinux fixes

GPRS/EDGE net speed optimization

System animations optimization

Placebo:

Touch-screen sensivity optimization

Frame buffer optimization

Network buffers optimization

Kernel network stack optimization

TCP congrestion controller optimization

WiFi packets throughput optimization

MMC NAND memory optimization

Automatic I/O scheduler setup

VM cache optimization

VM panic deactivation

VM dumps deactivation

VM read/write speed optimized

VM memory compaction activation & optimization

Task dumps deactivation

VM memory regions optimization

File system kernel parameters optimization

Kernel hung-task check deactivation

Kernel watchdog deactivation

File system cache optimization

Kernel RAM allocation optimized

ANY CPU governor optimization

OS boot process optimization

DalvikVM optimization

DalvikVM memory allocation optimization

Checking errors on all partitions

Multitasking optimization

System processes optimization

ART optimizations

DalvikVM multi-threading optimization

DalvikVM JIT compiler optimizations

Audio buffer optimization

Wireless display streaming optimization

Frames draw latency reduction

Meh/Good:

CPU sleep mode activation

CPU power-saving idle mode activation

Touch boost optimization

Device wakeup boost activation

Schedulers input boost optimization

Input boost optimization

CPU core hotplug boost optimization

EAS dynamic boost optimization

Multi-core CPU optimization

Kernel wakelocks optimization

Vivante GPU frequencies optimization

Adreno GPU frequencies optimization

Adreno GPU I/O optimization

Adreno Idler optimization

Mali GPU optimization

Mali GPU debugging dectivated

Mali GPU thermal limit deactivation

Mali GPU touch boost optimization

Misc unneeded logs deactivation

Forced file sync deactivation

Dynamic file sync activation

Disabling various kernel debugging

Doze and Light Doze parameters optimization

Cache partition trash cleaning

User partition trash cleaning

Internal memory trash cleaning

Apps cache cleaning when low free memory

Kernel schedulers optimization

ARCH power-saving activation

Kernel tracing deactivation

EAS optimization

Sched parameters scaling deactivation

Power aware kernel scheduling activation

Multi-core CPU scheduling optimization

HMP scheduler optimization

ARM SWP feature activation

CPU dynamic bus frequency scaling activation

RAM dumps deactivation

Cgroups parameters optimization

Power efficient CPU queues activation

CPU bandwidth optimization

LMK debugging deactivation

LMK agressiveness optimization

UKSM/KSM activation & optimization

zRAM optimization

NO-zRAM kernel parameters optimization

Process reclaim logic activation

Refreshing file system on all partitions (fstrim)

RIL dumps deactivation

App-manager power-saving optimization

WiFi misc debugging deactivation

Sqlite (database) optimizations

Media codecs log deactivation

HW powersaving video playback activatation

Activation of 4K-video support in YouTube app

Protection against net vulnerability CVE-2016-5696

Protection against Stagefright vulnerabilities

ANR/Dropbox debugging deactivation

App switching delay deactivation

HW UI rendering activation if needed

Dynamic FPS support activatation

A LOT of various debugging deactivation