[samtho]

99% of the time, I’m routing CMOS logic, i2c, SPI, maybe a CAN network here or there. I have maybe 10 projects where I worked with anything so critical that it required the most precise diff pair length matching. I think SRAM was the only that actually was affected by lackadaisically ran diff pairs.

Even then, KiCAD has successfully guided me to routing a number of signals that are capable of data transmission well into the megahertz range.

[lnsru]

Designed gigabit Ethernet board and one with FPGA+DDR3 using KiCad 5 and it was ok. Don’t see benefit in OrCAD or Altium here. Maybe for 60 GHz there might be some benefit. Bet that’s not my working frequency range.