When I press spacebar to play preview, it takes about 5 seconds before playing?

Never had this issue on my Windows 7 desktop, this is only on my brand new laptop running Windows 10... which should be a lot quicker and run AE better. Anyone else experience this?

I press space bar, wait about five seconds and then the preview plays even if it is already loaded.

Tried google and found nothing. This is on the latest version of AE but I'm using it for the first time on this computer. Specs: https://i.imgur.com/XpZmZfx.png

It makes no sense to me because everything else is fast except this.

Additional info: I'm using Mercury Software Only in settings if it matters. 500gb memory and disk cache are empty, purging affects nothing. Display drivers up to date. Working from local drives. Video footage is just small 1080p mp4 files recorded with OBS, so loading them is no problem once the video plays.