Thanks for the reply, this is happening on any course where there is a large group event. I did notice it initially in Makuri but it’s not isolated to there anymore. It’s not a quick thing either it goes on and off for a fair while.
This link shows it happening in this case on R.G.V
Yes, I noticed this a few weeks ago in Neokyo riding solo. I’ve only experienced in Neokyo/Makuri Islands but it’s pretty consistently an issue there. I was doing a short lap and it happened in the same spot on each lap.
Not the best for streaming but I wanted to try capture what was happening. I had the same thing again this morning on R.G.V on the 3R Endurance Ride. Large field of around 150. At its worse the whole screen was glitching out as we went through the whole length of the pave sprint.
All I’ll say it’s a good job I don’t suffer with epilepsy! - it’s getting a bit frustrating now, it was absolutely fine until the recent updates.
Yep that’s exactly how mine starts each time and then gets worse. Hopefully @shooj can point this in the direction of someone in technical that may be able to help. It’s not a great experience to have to put up with this each time I ride in a group or race.
Shuji at Zwift HQ here. Thanks all for flagging this up. Screenshots are super-helpful so thanks for those especially.
I’ve flagged this up to the team for investigation. One commonality I noticed among all of you is an Intel-based Mac with AMD Radeon graphics, which makes me wonder if a driver needs updating / rolling back.
In @D_anno_Race3R 's case - there are two GPU’s installed per this image.
Can I ask all of you check your GPU spec and post the screenshot? On my end - I can’t see if you have a dual-chip graphics - I can only see the one that’s being used at the time. If yours is a dual-GPU machine - please check if Zwift is set up to use the dedicated graphics card per Apple’s support site?
My specs are pretty identical to Danno’s. I’ve tried both discrete (the additional graphics card) and intergrated, yet it makes zero difference. Just in case you don’t know (although I feel sure you will), graphics drivers on Mac’s aren’t updated the same way as on PC’s, you can’t roll them back easily. Also, Zwift doesn’t force the Mac OS to use a discrete graphics card over the integrated one as standard (things like photoshop do) you have to do that manualy though a setting in preferences, or an add-on called g-switch (it’s been recommended by mac help before when trouble shooting a different issue with them).
Hope that helps with the picture.
Thank you for following up, @shooj. Here’s a screenshot of my Mac’s specs. My Zwift experience has always been top notch on this machine until several weeks ago when these screen glitches started. I thought maybe the graphics card was on its way out and was maybe too taxed so I toyed with reducing Zwift resolution in settings, but that didn’t prevent the issue.
Thank you so much for posting this. I searched everywhere for someone experiencing what I’ve been. I very recently switched over to using my iMac, 27" - using an HDMI cable with compatible thunderbolt adapter to connect my 75" TCL as a separate display. The graphics card I’m using is a Radeon Pro 580x. The problem has a strong correlation to the size of the group, as another user points out. If the group is relatively small (below 50), I have zero issues. But if there is a severe “crowding”, as noted in Zwiftalizer - I have the same issue.