On May 18, 2019 at 11:35, ichbinbose said...
Cat5e can do gigabit up to 328’. That is the spec.
If your not getting that at the switch or after it, i would suspect there is a bad cable.
You should use a tester for this.
I saw something like this last year. After looking at all of the obvious things first i tested the line and it came back with broken pairs in the cable and no easy way to fix it.
13 years ago- I thought it was 100 meters for 100Mbps but that might be 300 meters.