Hi followmsi,
Thank you for your persistent effort not only to keep our beloved NEXUS 7 (2013) alive but also to give it new life.
As soon as you informed us about LineageOS 20.0, I decided to replace LineageOS 18, which I had been using until then without problems. So I installed "TWRP-3.7.0_9-1_followmsi", "lineage-20.0-20230322-UNOFFICIAL-flo", "BiTGApps-arm-13.0.0-v1.9_signed" and "Magisk-v26.1" without serious problems . The version "lineage-20.0-20230322-UNOFFICIAL-flo" ran with problems and was very slow.
I installed the following versions "lineage-20.0-20230402-UNOFFICIAL-flo", "lineage-20.0-20230418-UNOFFICIAL-flo" and "lineage-20.0-20230507-UNOFFICIAL-flo" with TWRP only by flashing them. Nexus 7 is running like a sport car.
Again, many thanks.