Workflow with Premiere Pro and DaVinci Resolve // Xavc files with different frame rates

If the primary issue you're facing is due to format support then one solution would be to make use of Premiere's "Ingest" functionality to transcode the media you import into Premiere into a common format (ie one that's supported by Resolve).

time has come to find a permanent solution

Mine was to eliminate Premiere Pro altogether.

Blackmagic Design: DaVinci Resolve 14

What's new in DaVinci Resolve 14

Conforming is considered a standard part of the process for nearly all colorists working in Resolve when working with any NLE's imported projects. The guys at mixinglight.com have a series in their site on the conforming process of a short film shot in PrPro. There's a number of hassles ... some even caught Patrick Inhofer, a very experienced colorist, by surprise. Not because PrPro is worse than any other NLE at this, but ... just because the way the editor had done a couple things meant the options that he's been typically using in Resolve caused a real mishap with the timeline.

By figuring out how to change his settings ... this involved some speed-ramps, some scaling of 4k media into a 1080 sequence, that sort of thing ... so that Resolve made the right guess when meeting the info in the PrPro XML, he got the project conformed. And had some comments about settings within PrPro that definitely make it easier to conform in Resolve, and some that ... didn't. And the settings in Resolve to better suit the XML that PrPro delivers.

With the thorough comment that this is a major learning process to work with any NLE on a regular basis.

Being a one-man shop, I thought the Direct Link to SpeedGrade was incredibly wondrous. And was rather ... disturbed ... when rather than migrate SpeedGrade forward with a needed new build, they de-linked it from PrPro 2015.3 (first of the 10.x builds) and forward ... effectively sidelining SpeedGrade. I can easily demonstrate how to do about anything that can be done with Lumetri ... including some things never imagined by the developers ... but compared to an actual grading app, it's ... limited, slow, and not suited for shot-matching. To be polite.

If I've got much shot-matching or precise work or just need a number of HSL keys, I still use the Ntown Productions PrProBCC applet to auto-mod a PrPro 2017 project file so that Sg 2015 can "see" it as in Direct Link process ... and then auto-mod the project file back to PrPro 2017 numbers. It's a change of one (1!) character in the file header.

That's not an option if you're using any AE comps ... those would need to be replaced with a full-media export from AE ... and for a lot of major shops, probably. It also is PC specific.

You might consider a month of subscription to mixinglight.com just to study the about 45 minutes of the three videos Patrick Inhofer has on conforming the Giants project from PrPro into Resolve. May help you a lot.

Neil