The release version of MSFS introduced problems with the SimConnect API that weren't there in the Alpha/Beta phase. This causes massive stutters and performance degradation with all addon apps that use the SimConnect API.
Therefore the DEMO of the MSFS version of AxisAndOhs has no more 20 minute restriction. For the time being it will continue to run. The DEMO for the other sims is still limited.
Please make sure to try out the DEMO version of AxisAndOhs if you consider using the app. There will be no refunds and there won't be any support for non-functional controllers.