hi @Wertandrew ,
Heres the original post you made. two years ago, which explains the problem
Critical - Audio sounds choppy on Switch (+ video) - General / Issues and Bug Reporting - Epic Developer Community Forums
and another
CRITICAL - audio sample rate issue Unreal 5.4.3 - Switch build - Development / Audio - Epic Developer Community Forums
My Switch is a new one but does NOT have any added Memory which can cause problems with Fortnite, but this may be a CPU problem on a Switch 1 as explained before
Looks like just need to get a couple more votes
@Wertandrew The only NS “2” Fortnite dev in the UK says the same on NS 2
But this will probably become "need more information ". There is NOT any more information except only fails on non-epic media and was at 48k, not higher, which NS2 is capable of playing