TL;DW: For the best combo of visuals & fps, use DLAA + Frame Gen + RT Ultra if Nvidia, otherwise use FSR NativeAA (or FSR Quality if you don't mind some fizzle/shimmering) + Frame Gen + RT Ultra.
System specs:
Mobo - Gigabyte Z690 Gaming X
CPU - i7 12700KF @ Stock
RAM - 64GB DDR4 3600MHz CL18
GPU - Zotac RTX 4090 Trinity @ 80% Power Limit
SSD - 2TB Sabrent Rocket 4 Plus-G NVMe (primary)
SSD - 8TB Sabrent Rocket 4 Plus NVMe
Display - Alienware AW3423DW 34" QD-OLED @ 3440x1440 144Hz 10-bit