Rudy ReShade for OBLIVION REMASTERED
www.nexusmods.com
Looks like they found the issue with stuttering/frame issues

Rudy ReShade for OBLIVION REMASTERED
Reshade presets restoring more natural colours, de-fogging the game and adding the ability to turn off the HUD

Looks like they found the issue with stuttering/frame issues
Yes deactivating Generic Depth Buffer in Addons solved my stutter problems with FG on.