from what i can gather from this example attempt of exploiting it, the PID wraparound occurs at 7FFFFFFF, and afaik someone already managed to get this made and refined so it only takes 2 hours, so there has to be a way of forcing the PID faster than this method, i was pretty sure swapping applets on NTR causes the PID to still go up but doesnt have the same overhead as booting a full app so i would imagine swapping from applet to applet may fair better......then again the source here says launching system apps doesnt work and doesnt increase the PID
in which case maybe its a matter of spam closing something that the system will always restart if closed to increase faster, idk but its cool to see people having a go