Thanks for supplying your system specs. You are well above the requirements so that's not the problem.
Have you perhaps customised your global 3D graphics settings in the Nvidia Control Panel? If so this could be the problem.
Please try the following to check you are allowing iClone to have control of your 3D Settings:
1. Right click on your Desktop and open the "Nvidia Control Panel".
2. Now select "Manage 3D Settings" from the left panel and then click the "Program Settings" tab from the right side.
3. Look through the list of programs to see if iClone is present. If it is, select it and ensure it is using the RTX 2070.
4. Do also check that it is using the default "Application Controlled" settings and you are not using a custom profile.
5. If iClone isn't listed, click "ADD" and then find iClone 7 in the list or use the location below (default install).
C:\Program Files\Reallusion\iClone 7\Bin64\iClone.exe
6. Select the iClone.exe and click "Add Selected Program".
7. Again make sure it is using the RTX 2070 and using the default "Application Controlled" settings.
Do try this and see if it helps.
Peter
Forum Administrator
www.reallusion.com