@Franksz:
Please, try the following if you are confident in using the command line and a simple text editor. If you have never used the developer mode before then do not try.
Find a short how-to in https://jolla.zendesk.com/hc/en-us/articles/202011863 and in https://jolla.zendesk.com/hc/en-us/articles/360010391013
devel-su
cp /usr/lib/systemd/system/pulseaudio.service /usr/lib/systemd/system/pulseaudio.service.original ## save the original - just in case
cat /usr/lib/systemd/system/pulseaudio.service ## glance thru the file if you want
vi /usr/lib/systemd/system/pulseaudio.service ## edit the file
Look for the following 3 lines in the editor (they should be from line #18 onwards):
Restart=always
RestartSec=1
Type=notify
Add the following command immediately after those three:
TimeoutStartSec=120
Save the change and exit the editor. Check the file content to be sure the editing session worked:
cat /usr/lib/systemd/system/pulseaudio.service
Restart the phone.
Should there be a need to return to the original you should give the following commands:
devel-su
cp /usr/lib/systemd/system/pulseaudio.service.original /usr/lib/systemd/system/pulseaudio.service ## get the original back (let it overwrite)
reboot