Dude, you’re not crazy — I’ve noticed the exact same thing lately. Casting from browser tabs (especially Chrome or Edge) has been super unstable since the last update. But like you said, apps like Netflix, Disney+, Max cast totally fine. It’s 100% something with the browser’s casting protocol after recent updates.
A quick workaround you can try is disabling hardware acceleration in your browser settings. Sometimes that weirdly affects casting performance. Or try using the VLC player to stream your local files via cast — it’s way more stable than browser tab casting.
Also, just a thought — sometimes casting lag or bad connection can be tied to your laptop’s performance too. If your CPU or GPU is getting bottlenecked while handling multiple tasks (like high-res streaming + casting), it can mess with the connection. You might wanna check your system using this Gaming Bottleneck Calculator — it's super handy for seeing if your hardware’s holding you back during stuff like this.
You’re definitely not alone though — it’s been driving me nuts too. Hope they patch it soon.
