Delay After Pressing Spacebar (Play)

As of lately, A project I have been working on for months without issues has become extremely slow. When pressing the play button / Spacebar there's a 15-30 sec delay before the project timeline plays. This was not presuent before.

Nothing has changed hardware-wise nor project-wise

Yes im using proxies and pre-rendering.

Ive tried the following:

Cleared / deleted all adobe caches
Removed all Adobe products + preferences and then used the Adobe CC cleaner tool just to be sure
Rebooted Several times
Deleted all project related previews
rebuilt proxies and pre-renders
Renamed the Media's root folder and re-linked everything again, Still the problem persists, It appears to be non-discriminatory.

My Computer Specs are as follows:

Intel Core i7-8700K

EVGA GeForce GTX1080 FTW2 DT 8GB
G.SKILL Ripjaws V Series 32GB
8TB RAID 10 Array
SAMSUNG 960 EVO M.2 1TB NVMe

Gigabyte Z370 AORUS Gaming 7 Motherboard

Windows 10 Pro 64bit