Power Filtering vs Power Regeneration?

About two years ago....I began experiencing the dreaded power supply vagaries which seem to attack my system every two or three weeks...👀😱❓
The analogue soundstage collapses with a loss of transparency and bass whilst the high frequencies become grating, strident and brittle.
This makes the experience of listening to records, worse than the truly bad days of CD playback...and it can last two or three days before gradually settling down...😥
So frustrating had this new phenomenon become that I bought a Shindo Mr T transformer based power filter into which I plug both turntables and the Halcro DM10 phonostage/preamp....👀
Unfortunately it hasn't solved the problem...😥
I'm wondering if a power regeneration circuit like the PS Audio P3 would be more likely to succeed....❓