Problems with baking lightmaps 4.18.1

Hi guys,

I have a very simple light setup:
skylight with HDR hooked up
2x point lights

I have set Num Sky lighting Bounces to 2

On preview quality, it bakes fine, but starting from Medium and higher, I have this crash. I have no idea why (going back to num sky lighting bounces 1, bakes perfectly fine, but I need to have move bounces, the quality is much better). Can you help me how to fix it?