Steps I took that resulted in the problem:
start DRC on a PCB (format is near DIN A4). It runs about 5 minutes. Tested an 2 different computers. Using 1.0.6, the DRC needs about 40 secounds.
The same on a smaller, less complex PCB, the DRC takes about 2 times longer.
My version of Fritzing and my operating system:
primary solus os, ubuntu 24.04.5 lts for testing. Both with the appimage version