Transmission add-on crashing on ReadyNas Duo

Since 2.22, quite a few new features are added to Transmission. Each feature requires more from your NAS, which means that each feature might be one to much. Most new features can be disabled, but since Transmission includes those features to be used, they turn them on by default. The old parameters are still in the settings.json file to make sure nothing unexpected happens and that a downgrade to an older version goes smoothly.

The Duo is a machine that has limited resources because it is not intended to be a high performance server (that is what the Pro series, and to a lesser extend, the Ultra series are for), but a simple solution to host files on a home network. This means that it might not be able to cope with all the new features and other resource-eating-functionalities without some tweaking. What tweaks work for you depends on the demands you put on them. I don't know why you require a high peer limit, but that means that you have to squeeze other features.