My girlfriend is experiencing the same thing. It started on Tuesday and got worse on Wednesday and has since plateaued but gets worse when she’s tired. MRI, CT and bloods are all clear. Doctors said it’s a functional issue with the brain rather than a physiological issue so she’s been referred to speech and language therapy. No idea what’s caused it but we’re hoping it’ll go away as fast as it came 🤞has yours got any better since your original post?