Latest 1.13 releases include cnc-ddraw (by FunkyFr3sh)

Using this should also help to solve preformance/graphic issues when running 1.13 on modern OS

No need to download it again (already included in latest 1.13-releases), 
but here's the link to it for transparency reasons

https://github.com/FunkyFr3sh/cnc-ddraw

21.08.2023