you need to have a great pc to run this mod.
Minimum graphics card specification is gtx 1070. but the recommended graphics card for rtx half life 1 is RTX 3050 or any rtx graphics card with dlss 3 support.
if your graphics card doesn't support dlss. then it will have bad performance. soo running the rtx half life 1 with gtx 1060 6gb will have too much terrible performance. soo keep it in mind.