When I render a video in Vegas Pro 23 with H.265, I can't fast-forward it. Rendering in Vegas Pro 23 with H.264 is no problem. In Vegas Pro 22, everything worked fine in H.265.
@Gerard-Faassen The only performance difference I've seen in Hevc rendered output is with the vp23 b302 template for Nvenc. If you use MainConcept, QSV, or VCE instead, the rendered clips play better in Vegas.