Picotool unusably slow with large program (W11)

[UKTailwind]

MMBasic creates an image which is just under a Megabyte (rp2040). elf2uf2 used to create the uf2 in a couple of seconds. picotool takes several minutes and a processor is running a maximum during this period (W11 PC with I7-12700). It does eventually complete and appears to create a valid uf2.
I believe the problem is in the creation of the dis file which is 11.4Mbytes. If I kill picotools using the task manager the UF2 is created but the dis creation fails

[will-v-pi]

Closing as duplicate #106