Now Loading Issues

Hey Community,

sorry for my english. I have some problems / issues with my 2000 nexus. Sometimes or often i get the Now Loading Error. Attached  you will find the video of this Problem. Sometimes i got it after an half hour or after 2 days and sometime 2-3 times.

I have this problem since i bought the Set. Both ot them have the firmware 1.21 and Rekordbox is on the version 2.2.1. I delete completly the Usb-Stick and SD-Cards and i fill and analyse the music with Rekordbox.  (USB-Stick Intenso 16gb (2.0) / Sandisk 16gb (3.0) / SD-card 32gb Sandisk (class 10). I use the sticks and Sd-cards only for DJing. I connect the set with a switch Netgear GS105, but i get the issues with and without connecing with a switch.

If the CDJ shut down / get the issues it is never the same mp3, its always a different Track and i cant locate the Problem.

Solutionoption was :

• Updating firmware of 1.06 to 1.21 in single steps

• format/delete the USB-Sticks and SD-Card to refill the music with Recordbox

• buy new stick / different sticks / sd-cards from different companys

• change lan cable

• the cdjs was 2 times in repair

• remove coverpictures

I dont have a Idea, what can i do ...

Set:

2x CDJ 2000 Nexus

1x DJM 900 Nexus

1x Switch Netgear GS105