Tested and Successfully the receiver was the problem as I just remove the 5V wire we got immediately 3d fix with 15 sats indoor, many thanks to bring this idea… 
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can you share a photo showing the location of your ELRS RX and GPS
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Which ELRS receiver is that?
What packet rate are you using?
You can try different packet rates and see if it makes a difference.
Also I suggest in ELRS lua go to Other devices, select your receiver, and tell us what the Tlm Power is set to.
I suggest setting it to MatchTX so it automatically stays at lowest power unless it needs to increase, this will lower amount of interference for GPS. For this to work you have to have dynamic TX power enabled as well.
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I already desolder and wiil replace with betafpv diversity old one I have and will test.
For what it’s worth I am running XR4 Xrossband ELRS and M10Q-5883 GPS and very few issues. I keep the GPS isolated from other components, but the copper foil tape really helps too.
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I will try to. Get these copper tape to shield the wires.
great! Happy to share our experience and was usefull to you!
As some one said, we have to wrapping some part of the drone with aluminium foil to prevent this problem.
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