Missing Vulkan with Intel HD Graphics

Sadly Intel dropped iGPU driver support for Windows 7 starting on 15.45, so I can't test that myself
Maybe @"kd-11" can have a look

Also, Vulkan RunTime, 1.0.54 is very outdated. Do recent drivers really ship with that old RunTime version?

The 4877 driver ships with 1.0.62, not sure how recent that is. I had 1.0.50 before that which worked with RPCS3