Advice on reconfiguration of Workstation for DaVinci Resolve

I have been running Resolve Studio version 15 (currently at 15.2.3) successfully on the following platform:

Windows 10 Home (currently at version 20H2)
Motherboard - Asus Z170A
CPU - Core i7-6700K
RAM - Corsair 32GB DDR4-3200
GPU - Asus GTX970
Ext. monitor card - Blackmagic Intensity Pro 4K
System drive - Samsung 840EVO 250GB
Project drive - Crucial 1TB SSD
Local media drive - WD SSD in Atomos caddy
Various other HDDs directly connected or loaded into Icy Dock

The whole setup has been reasonably stable for a few years for working on FHD and UHD video recorded either directly on a Panasonic GH5 or a externally on an Atomos Ninja V. Performance isn't exactly fast, especially with UHD, but the platform is not used for commercial work so it is not an issue.
For the last two years, I have been waiting for intel to release their 7nm generation of CPUs but of course this has been delayed yet again and coupled with the scarcity of reasonably priced GPUs I an still waiting to upgrade. Meantime, the current configuration I know should work OK with version 17, but acknowledge that the existing hardware will be working even harder, particularly with the 4GB of GPU ram (which some posters here say is in reality only a working 3.5GB) so would appreciate some advice on configuration of the GUI.
Currently, the Nvidia GPU handles the GUI and all of the Resolve computational requirements. The CPU has of course it's own GPU with quick sync, and with 32GB of RAM it would hardly compromise the need for running programs including Resolve (I don't yet use Fusion). So my question is, would it be better to continue sharing the GPU RAM between GIU and graphic computation, or would its computation performance improve significantly if the GUI function was offloaded onto the CPU?

I would be grateful if anybody here can offer advice or even warnings about either solution.

TIA

Using integrated graphics for the gui and a discreet gpu for compute was common up until DR14. At that point, users reported the igpu support as such was broken. The official config guide currently advises against mixing gpu's. Downsides of the new playback engine, I guess.

Thanks for the info. I must say that I've not had any problems with the discreet GPU since I installed Resolve 15 (first free and then studio versions) so maybe the playback engine automatically throttles rendering back to prevent it choking and crashing. I'll just update to v17 and see how it goes. Surprisingly, my test machine - an i3 Haswell office pc with 16GB of Ram and intel integrated graphics just managed to colour correct a V-Log clip with a LUT and a bit of lift and gain adjustment, albeit slowly, but it didn't crash, so 17.2.2 looks good.