Resistance problems

Hey all, anyone having any issues with resistance today. Running Zwift on ATV with Saris H3 and it has been flawless for months until today. It seemed that there was a lag between hitting an incline and the resistance increasing. I could easily hammer up a 10% climb then struggle on the flat or downhill.
I’ve read about a glitch where world’s can intertwine so you weren’t actually riding the route you had chosen.
Everything is up to date and I tried shutting it all down and trying again but made no difference.
Any ideas???

Had the same issue today riding with a group, I even power cycled the trainer to see if that would help sync the trainer with the route I was on. I am using the ATV 4K with ATV