Clean electric guitars are back to the synthesised sound
The recorded notes clean electric guitars played from since 1.14 are gone. They didn't sound good enough in the real player, so clean parts use the synthesised guitar again.
Since 1.14, clean electric guitar parts played recordings of a real guitar instead of the synthesised one. They won short listening tests, but played through whole songs they didn't hold up.
What changed
Clean electric guitars now use the same synthesised guitar as every other guitar part, as they did before 1.14, including the softer pick added for clean guitars in 1.11.1. The player also no longer downloads those recordings, up to a few megabytes per song, before a clean part can start.