When burning a disc (DVD or BD) the burning part just slowly chugs along. Example, today I had a 33 min. 1080i basic rendered recording that took 3 1/2 hours to burn it. But when made another copy, it only took 13 min. to make.
I do have the latest DVD Arch. Still using win10.
I've had this issue even with Pro20.
It is in the third stage of physically doing the burn-in. The first two stages are good.
DVD Architect is an old now long disontinued product. Being a standalone product, it's performance is not intinsically related to any Vegas Pro version other than Vegas Pro being able to render a video format compatible with DVDA. With a BD burn, DVDA will take quite some time to process the Vegas Pro render to an .ISO file. Once that .ISO file has been created, burns to BD discs are very much quicker because they use the .ISO file to burn from. That's why your 2nd burn took so much quicker - it was using the already processed BD format that DVDA had already performed. Its not that dissimilar with DVD burns only that the DVD creation process results in differenty named files to the BD .ISO result.
So then what do Vegas Pro users use now to do dvds & BD. At least the ones that still do that.
So then what do Vegas Pro users use now to do dvds & BD.
It's not just Vegas Pro, it's almost all NLEs (unless they have a proprietory DVD/BD creator).
There's not very much around any more - streaming, cloud, YT, social media and memory cards are now king.. Wikipedia lists the disc options thus:
https://en.wikipedia.org/wiki/List_of_optical_disc_authoring_software
BTW, I still sucessfully use DVDA 6.0 for creating BD discs.