nRF24L01 and MAX6675 conflict

Hi, I have one question regarding the problem of using one pair of nrf24L01 to transmit temperature data from client to server. I noticed that the temperature reading from MAX6675 module at client side slowed down significantly (sometime went to 1 minutes or longer). The Arduino NANO was used as server and UNO is at client side. Both client and server were connected to nRF24L01 and one 10 uF capacitor connected at the VCC and GND.
The temperature module (MAX6675) worked normally even with nrf24L01 module connected, if the server did not connect to the USB port (or unplug the nrf24L01 module at server).
I really appreciate if anyone could help.
Best regards,
James