Refresh rate problem

Hello, I’ve recently set up a new Pi4 to a 720p/1080i LCD TV, which has always worked fine with a Pi3B+ running Kodi through RetroPie.

Main issue I have at the moment with LibreElec on the Pi4, is refresh rate. The resolution is defaulting to 1080p 59.94, which isn’t great for my needs - lots of tearing when navigating menus, motion blur on video, etc. There just doesn’t seem to be the option as I had before on the Pi3B+ to manually switch refresh rates in System - with only 1024x768p, 848x480p, 800x600p, and 640x480p currently listed as alternatives.

Is it possible to add custom refresh rates, at all? Would be very grateful for any advice.

Sadly, this very frustrating problem still remains. I’ve even tried copying over the edid.dat file from the 3B+, which at first, seemingly corrected the issue, but then, whenever a media file ended, the screen would turn blank, necessitating a reboot. Have also tried a full format, reinstallation and restore of the SD card, but the refresh rate options in System are still greyed out at 59.94. Would be very grateful for any suggestions. Cheers,