Welcome to the forum! 
Please post your system info as outlined here:
Try adding the following to ~/.config/pulse/daemon.conf (create it if it doesn’t exist):
resample-method = soxr-vhq
default-sample-channels = 6
default-sample-format = s32le
default-sample-rate = 48000
alternate-sample-rate = 44100
remixing-produce-lfe = yes
remixing-consume-lfe = yes
lfe-crossover-freq = 80