Freezes when I play music (on VLC & Firefox)

When I play music, it freezes for 1-2 seconds. ( on VLC / Firefox ) GPU: Nvidia GTX 1650 Driver: 595.71.05 ( open ) Gnome: 50.4 Kernel: 6.18.46 NixOS: 26.05 x86_64 ( stable ) Ram: 15.53 GiB