[ClippyBeer]

Playing closer attention to your specs, your hardware is approx 12 years old, and you are running Windows 10. I guess your hardware does not have the specs required, and if they do, then your drivers are not fully compatible with Windows 10 and Kodi v18.

Too old you say?  My Kodi 18.3 PC specs:

Athlon Neo X2 6850e, 1.8 GHz
3GB 800 MHz DDR 2 SDRAM
On-board Radeon HD 3200 256 MB shared
built-in 802.11g wifi
Youtube 6.5.0
Windows 7 x64 (updated - NEVER)






I am able to play Youtube 1080p streams smoothly on this old box.



It probably is something to do with Windows 10's drivers for your video.  I used to have Windows 10 till an update disabled my HP printer drivers.  Un-installing, re-installing drivers from HP's website wouldn't fix.  Back to Windows 7 I went.

You really should be able to utilize hardware acceleration if you have the right drivers installed.