Setup: VuDuo2 with VTI and LibreELEC (official): 11.0.1 (RPi4.arm) with latest vdr.vuplus addon from addon repo.
After upgrdading from libreelec 10, the loading of the EPG takes hours. From the logfile it looks like every channel takes more than 4 minutes.
I have the same installation on a PC, with different addons, there it takes seconds.
I attached a (hopefully) relevant log file section.
I'm not aware of any setup/config changes different from the versiion 10 install.