Hello @Ponwes!
Do not use this:
Well, your scene is eating all the resources you have 
Take a look to Gpu crash/d3d device removed error? - #42 by alberto
is It necessary to use 4k textures?
not sure perhapsā¦ r.VT.PoolSizeScale 0.5
Try to render with legacy, quality is the same, just to see if it works, look what a result