early in the morning did a gps Rescue Test (more comprehensive) on betaflight 3.5
camera : 1200tvl cmos
tx: QX7
rx: xsr
gps : bn-180
fpv : diy pagoda antennas rx + tx
some significant bugs have been fixed in BF3.5.1 !!! stay tuned for next test !
No magnetometer (compass) used ! just gps heading. so be shure is correct before testing.