60 min to do 1 min is really slow, 2 seconds per frame, like something is not set right in process selection or your cpu is to old. When I had a gtx1060 it could do 720 to 1080 1 min in about 10min and that is half as powerful as a RX6600. Topaz does not need a lot of RAM but it does need a cpu new enough to have AVX2 encoder.