Hi,
I do not know, I just uploaded a 2.7 Mo DXF without any issue.
I duplicated 100 times the drawing. LibreCAD did not crash although one of my CPU core is at full load and 11 Go of RAM is used (I other applications opened).
I imported the almost 400 Mo file without issue except loading time and some latency on each action !
It looks like the limit is the hardware...
Fabrice.
Fabrice
French hobbyist interested in 2D design.