I want to preface this to note I have well over 10k of miles on FG in the past couple years.
The issue is new and something I have never had a problem with even when first starting out.

I recently have a worsening fear of low resistance high spin. Its been getting worse over the past few weeks to the point of ruining my enjoyment when there are downhills, even relatively minor ones, or even very strong tailwinds.

I get this paralizing fear of OOC spin when going down inclines. Paralizing as in my body freezes up which on FG is not pleasant.

At first a couple weeks ago it first started at ~140rpm, it gotten worse, last night I started to get mental at ~110rpm. That's ridiculous, I've previously peaked at 160-170rpm down hills.

I used to be able to comfortably go down any hill at 120-130, using legs and front brake to modulate speed as needed. Now I start to freeze up as soon as I feel the pedals pullling me. Now I only feel comfortable going down with massive resistance to pedals and/or riding brake hard. Way too slow.

This of course is only downhill when the speed comes externally, not from my legs. Now it is even minor downhills freaking me out.

I think the solution maybe to gear down and focus on high spin on flats and then work back to gentle declines. Or maybe take a break from FG?

Has anyone else experienced this? Why now? Physically I feel fine.
Any other (serious) suggestions to get over it?
Maybe it just will pass. Probably one of those things where the more I think about it the worse it gets.

Al