I believe it's the hardware support issue, Enscape deals with different GPU's differently.
I used to have a GTX1660ti 6gb and Enscape used to crash when the I ran out of video memory of 6gb.
Few months back my GTX1660ti died and due to money restriction I had to buy a used GTX1060 6Gb.
To my surprise this card (GTX1060) never let Enscape crash as soon as I hit max video memory.
I noticed in my task manager that when card video memory gets full miraculously Enscape starts utilizing the shared video memory(which is basically the RAM of my system).
I used to have a lot of Enscape crashes when I used to have GTX1660ti but now I hardly suffer any crashes.
I can easily render 4K videos and stills of resolution 7000x5000.
I use a lot of proxies for very big files in SketchUp and keeps the main SketchUp files under (250Mb).

My PC specification: (It's quite an old setup but still running strong)
Intel Xeon E3 1220 v2 (4 core 4 thread) (running on ASUS Z77 mobo)
16Gb ddr3 ram
Zotac GTX1060 6Gb