Saving Calc file takes a lot of time since Version 5.3.4.2 (x64)

Hi.

Basically title.
I got a password protected (don’t know if relevant) Calc file which takes a lot of time to be saved since LO Version 5.3.4.2 (x64).

Is this a known bug? Something to check?
I’m running Windows 10 Home x64, fully updated.

Reported bug tdf# 107947 Long time is need to save a file with password-protected after edits but not confirmed.

For me really fast with
Version: 5.4.0.2 (x64)
Build ID: 2b906d450a44f2bbe506dcd22c51b3fa11dc65fd
CPU threads: 4; OS: Windows 6.19; UI render: GL;
Locale: es-ES (es_ES); Calc: group

Thanks for the link and feedback.