The option you are looking for is promoted to Preferences in FastRawViewer 2.0.9:
New option in Preferences - Image display: Apply DNG OpcodeList2/3 tags
No processing: do not process Opcodes 2/3
JPEG/JPEG-XL compressed: process Opcodes mentioned only for files compressed via JPEG/JPEG-XL compression methods (default value)
All DNG files: process these Opcodes for all DNG files with such tags present.
Opcodes2/3 are used for JPEG/JPEG-XL files linearization (so, processing for such files is mandatory to get right rendering) and for lens correction (such processing is optional, while time consuming)
New option in Preferences - Image display: Display DNG Enhanced images: if set, Enhanced (high resolution/improved) frame will be displayed for DNG files with such sub-image. If not set: source RAW will be displayed.
DNGShowEnhancedImage/DNGShowStandardImage hidden settings scripts are removed.
The option you are looking
The option you are looking for is promoted to Preferences in FastRawViewer 2.0.9:
New option in Preferences - Image display: Apply DNG OpcodeList2/3 tags
No processing: do not process Opcodes 2/3
JPEG/JPEG-XL compressed: process Opcodes mentioned only for files compressed via JPEG/JPEG-XL compression methods (default value)
All DNG files: process these Opcodes for all DNG files with such tags present.
Opcodes2/3 are used for JPEG/JPEG-XL files linearization (so, processing for such files is mandatory to get right rendering) and for lens correction (such processing is optional, while time consuming)
New option in Preferences - Image display: Display DNG Enhanced images: if set, Enhanced (high resolution/improved) frame will be displayed for DNG files with such sub-image. If not set: source RAW will be displayed.
DNGShowEnhancedImage/DNGShowStandardImage hidden settings scripts are removed.
https://www.fastrawviewer.com/blog/FastRawViewer-2-0-9-Beta