Slow decline of my DaVinci Mac systems

I have noticed that over the last few years as DaVinci Resolve updates have been installed on my old Mac Pro's, they have been becoming less and less responsive.
The last usable DaVinci version that I have been using on the 2013 Macs was v17. After that it was a crash fest, although they occasionally would run v18. (the macs didn't meet the ever increasing DaVinci hardware requirements)
I switched over to a Windows 10 machine which would run v18 but I couldn't use many features due to GPU errors.

I now find myself at a crossroads with what I am to do. I need to get a new Mac (tower) that meets current DaVinci specs (and hopefully a few years into the future).

My current (defunct) Macs have Decklink Intensity 4K PCI cards installed and I would like to continue using them.

What can you recommend as a replacement Mac Pro?

Baz

I have noticed that over the last few years as DaVinci Resolve updates have been installed on my old Mac Pro's, they have been becoming less and less responsive. The last usable DaVinci version that I have been using on the 2013 Macs was v17. After that it was a crash fest, although they occasionally would run v18. (the macs didn't meet the ever increasing DaVinci hardware requirements)

If your 2013 Mac experience was good up until a point, why not just buy a 2024 Mac? The Mac Studios are very good -- the Studio Ultras, even better.

A lot of your decision is going to hinge on budget. The Mac Studio Ultras are good, but not cheap.

@Marc
I'd suggest a Mac Studio too, but there's one problem: Baz wants to use a DeckLink card.

@Baz
The new Mac Pro mainly consists of expensive empty space. Its only advantage is a bunch of card slots, but it's not any faster than a Mac Studio in the same configuration, just far pricier.
I have not been able to test this myself, but have seen reports that an external box like the ones from Sonnet can be used with the M* Macs. You can't use an eGPU with M* processors, but other cards should work. Maybe you can verify with BM's support. Getting such a box should be a much cheaper solution than a Mac Pro, since eGPUs got pretty much out of use recently and you should be able to find an empty expansion box second-hand (or one with an outdated GPU in it).

It seems we have a confirmation for a DeckLink in external boxes, scroll down:
viewtopic.php?f=21&t=189149&start=50

use the decklink card in a TB3->PCI expansion case.

When I sold my intel iMac with eGPU, I kept the PCI case while selling the GPU for more than I paid for it 2 years after buying it I put the Decklink card into the case and it works fine. use it for zoom feeds to input camera SDI in, or feed screens with mac mini when I need 3 clean feeds and it only does 2 getting some great after the fact use out of the decklink 4K I though was worthless because it wouldn't sell on ebay

I use the Decklink Mini Monitor 4K in a OWC Helios 3S pcie Thunderbolt 3 expansion chassis and it works great. Works out of the box and is stable. The Helios is $250. Comes with a thunderbolt cable.

A Mac Studio M2 Max with 64GB, 38GPU core, 1TB SSD and is really awesome. Ultra is faster, but more $$$$.

Thanks for all your inputs.
I think I may settle on an Apple Mac Pro Tower with M2 Ultra 60 Core GPU, 64GB RAM & 1TB SSD.
It should basically be a card swap.
Baz

Thanks for all your inputs. I think I may settle on an Apple Mac Pro Tower with M2 Ultra 60 Core GPU, 64GB RAM & 1TB SSD. It should basically be a card swap.

That would be a great system -- I think you'll find it to be a huge improvement over your old system.