Thank you for your donation to IFME Project 🙂
However, IFME 4.9.5 now support AviSynth Support you can get it here, however this version likely not stable and only accept DirectShowSource at this moment plus I adding HFR (High Frame Rate), found any issue, just send a issue at GitHub or can contact via IFME FB Page.
Take note that IFME 4.9.5 is not public and official release for production stage.
In another news, I developing IFME Distribution, this allow you to encode video over network, for example, setup 2 encode server let these 2 server encode your video, this solve the encoding time by parallel it.