Problem using both Keyestudio TFT and GPS modules

Hi when I just connect the TFT or the GPS module both work fine but when I add the TFT to the GPS module I dont get any data from the GPS and the TFT is very slow. Do they interfere with each other ? I think the TFT uses the SPI interface and the GPS RX/TX on port 6 and 7, but all pins are connected on boths modules

  • Keyestudio 2.8 Inch TFT LCD Display Shield Touch Panel ILI9325 For Arduino
  • Keyestudio GPS Shield With SD Slot +Antenna For Arduino R3

thanks for any advice