Yes, it is there, unfortunately to test the original code you have to have subpar CPU latency, have some glxgears running, and halscope to simulate/induce bad latency, then you probably have to restart a whole bunch of times, in my case I methodically restarted 100's of times, moved and checked the ferror while moving for the grinding, the better your latency is the less probability you will land on the bad window randomly, by inducing some strong latency on my system running graphical processes which I know give me spikes, I was able to get grinding in the ferror about 20% of the times, without purposely inducing latency I would see it 5% of the times, and I'd really have to look for it with halscope, because opening halscope and plotting the ferror would actually make the latency worse, and the consequently I spotted it more often, without halscope running I could potentially see it only once every 100 restarts if ever, which makes the issue incredibly rare with good latency, the original code was good at syncing, but phasing was random so if you ever were to end up in the grinding window, a restart would have fixed it almost always, phasing was random as far as I tested before my fix.
