Flatpak libreoffice slow in qubes

Hello all
I have the flatpak version of libreoffice in a debian qubes and when scrolling it is painfully slow even on a two page document. I am aware of work around for libre office installed by apt such as this one

Making LibreOffice run at an acceptable speed under Qubes OS — Rudd-O.com

but there are no known workarounds for fixing the issue in the flatpak version. Has anyone tried fixing this?