An i5 should powerful enough to do down/upsampling and apply at least one convolution filter. Just check the “processing speed” number, again, everything above 5 is OK.
You can create, store and edit various DSP settings in Roon, so if something doesn’t work, just use another saved setting.
In your screenshot you are using a PCM file, not a DSD file, bit that’s what you want to process? Then maybe this is of help: “…using convolution with DSD is possible but you have to enable DSD processing in the Roon’s DSP Settings under Sample Rate Conversion .” You probably already found this, but I’ll post it anyway: Convolution documentation and Convolver Config File Documentation.
Also here you might find some answers: Native DSD processing
Good luck with the tests. Love to hear about the outcome.