I actually played Heretic II when it was new on the Amiga on my A4000 CSPPC 060/200 on a CV3D. Turned out that it was slower then sotware renderer in 480 x 360 (that was a halfway playable resolution) but looked a little bit "less blocky"
Soon changed over to CVPPC after that.
This was back in the time where there were still updates to Warp3D for every new game to came out. Support for CV3D in later versions of Warp3D only got "dragged alog" rather then real support for the card so maybe it does not work fully with the latest version anymore.