I have recently been having severe palpitations and numerous PACs to point I couldn’t sleep or even function it was so uncomfortable. I am on thyroid hormone replacement and although my hormone levels were normal, reducing my thyroid dose one notch has helped a great deal. I hope you all have had your thyroid levels checked for hyper ( excess) thyroidism and if on medication, a dose reduction may be worth a try, with Dr approval of course. I also am getting relief from Bystolic, a newer beta blocker that has beneficial effects on blood sugar and lipids compared to the older beta blockers. It doesn’t lower heart rate as much but is suppressing the PACs and palpitations.