Good lordt why is HDR rendering so damn hard....That aside and to get to the point, and yes I've tried googling, and yes my monitor is OLED.

Pretty sure I've done everything right
HDR mode is set to HLG
Pixel Format is set to 32 bit Full Range
Aces colour space set to default
View transform is set to REC 2020

Made sure to change the video properties too

Have tried with PS5 footage captured via an aver media capture card, and with NVIDIA Shadowplay, both set to record in HDR, but when dropped into Vegas Pro 23 and have made the necessary changes as outlined above, the colour still looks faded

I don't think PC specs matter in this instance but I'll list them just in case

CPU: AMD Ryzen 9 9950X3D
RAM: 64GBs DDR5 Dual Channel
GPU: Asus Tuf RTX 5090
Storage: 2x 2Tb NVME's

And feel free to call me an idiot if I overlooked something obvious or there is a specific setting I haven't ticked