I have little space because the copter is small, but the gps could still work well even with the printed support. The problem is the EMI lidar for GPS and partly the sonar for the compass.
I shielded the ildar with this conductive tape and with other EMI tape, on the bare part of the lidar PCB I also put a copper mesh connected to the GND of the FC. I shortened and shielded the signal cables as much as possible.
Here you see something: