Witcher 3 Remastered crashing with Reshade on loading a save

Hello all, I've got this problem with Reshade and The Witcher 3 Remastered. 

If I have Reshade installed the game crashes while loading a save.  Reshade seems to be fine and accessible in the Main Menu, but as soon as I load a save, the game crashes and sends a crash report, just at the point where the little loading circle on the bottom right of the screen changes from being over a dim Velen background screen to being completely blank, and without the line under the loading circle - i.e. the loading circle just freezes when it gets to the point where it's on its own on a blank screen, when normally after a co0uple more seconds the game world would fade in.

I've Googled this ofc but most of the returns seem to be about older problems that don't seem to be relevant (I've attempted some of the googled fixes and none of them work - e.g. changing the name of the .dll and that sort of thing). 

(One fix that does work and enable Reshade to work in game is to turn off the RT/PT.  Then it's all fine.  But ofc I want to have RT/PT on!  )

Any pointers gratefully accepted.  TIA
 

On further fiddling about I've found that the version of Reshade (the dxgi.dll and Reshade.ini) that comes wth the full version of the mod RenoDX - Tonemapping Overhaul - SDR and HDR Support - Colour Grading Suite - Post Processing adjustments , actually works with PT/RT just fine.  

Curious.

Maybe it's an older version of Reshade?  Or it's been altered for the mod?  Might be worth getting to the bottom of for someone, as it would still be interesting to know why the 6.8.0 addon version of Reshade (forgot to mention that in the OP) wasn't working.

Further thought, I notice that the two addon things that are usually on by default for Reshade as standard (the Depth thing and the one below it, something to do with runtime something?) are off with the Reno DX version. Maybe that has something to do with the crashing with the regular Reshade?