3.7 update problem

I updated to Pureraw 3.7 and the processing time is woeful . Using 3.6 it took approx. 7-8 sec for a Nikon Z9/Z7 II 45mp file. Now the software takes ages to open and minutes per image. If I got back to 3.6 it works normally

I have a 4090 RTX with latest drivers ,I have uninstalled and tried the last three versions of the nvidia software and clean installed them one by one it made no difference to 3.7. I set the GPU as default in preferences and have tried the various processing methods. Windows 11 is up to date and no other issues at all. No other software installed any suggestions would be most helpful