Raspberry Pi 4 performance plus 7i76E

I'm new to LinuxCNC I've installed the canned 2.9.1 on an RPi 4 8GB and got it to ping the 7i76E.  Then I ran the Latensy Test page and I've attached a screen shot of the page after running for about 20 minutes with no additional load.  According to pages I've seen as far as latensy test is concern the numbers that RPi 4 latensy test show is not a good candidate for any serious stepping and micro-stepping.  Since I'm pairing the RPi 4 with a hardware step generator like the 7i76E, should I just ignore the latensy test?

No need for a base thread.