Hello,
It's cumulative for all files in the robot folder, so it makes sense to keep it clean.
If you want larger files, there are a few options...
...KUKA.CNC (KRC4 only)
...KUKA CamRob (KRC2, not officially available for KRC4 anymore)
...PointLoader (
https://www.orangeapps.de/?lng=en&page=apps%2Fpointloader - third party product, haven't been able to test it yet. You will need to adjust the KRL output a tiny bit, get in touch if you will test it).
...or live-streaming via mxAutomation, though it might choke with the high point density of 3D printing files.
And you can of course also try to reduce the complexity of the toolpath.
Best,
Johannes