Why locus closes while recording

[Hispanico]

Many times on Locus 4 when recording a track, when open (drag) phone Locus not show track while show the screenshot annexe, where see loading locus?
Often cotinue recording, but sometime the record go in pause.
I dont use any enetgy saver

Thank for help
Hispa

Ps.
My recording track are ling 4,5 hours